Tritan copolyester
| ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution. | DESDES — Disinfectant Ethanol Sanitiser ChemiPro DES. An ethanol-based (70–80%) sanitiser with no non-volatile residue. Evaporates completely, leaving no WDC risk. A-rated for all common homebrewing materials. | Cleaning | Beer/wortWort Liquid extracted from malted grain during mashing and boiling, before fermentation. The starting point for beer. | |
|---|---|---|---|---|
| Rating | B | A | A | A |
The Cleaning column aggregates all cleaning product categories used in homebrewing at working concentrations. For a breakdown by cleaner type — alkaline percarbonate, phosphate-based, and oxidising — see the Cleaning compatibility section below.
Tritan is a copolyester developed by Eastman Chemical Company. It is not common in homebrewing equipment, but appears in a small number of specialised components — most notably the FermZilla Tri-Conical collection container, the clear vessel that collects yeast and trub dumped from the conical base during fermentation. It was developed as a BPA-free alternative to polycarbonate, offering similar optical clarity and impact resistance without the endocrine disruption concerns associated with bisphenol A.1 Outside brewing, Tritan appears in baby bottles, reusable water bottles, and food storage containers.1
Chemically, Tritan is a copolymer built from three monomers: dimethyl terephthalate (DMT), 1,4-cyclohexanedimethanol (CHDM), and 2,2,4,4-tetramethyl-1,3-cyclobutanediol (TMCD). The TMCD comonomer is the key structural feature: its bulky cyclobutanediol ring introduces steric hindrance around the ester linkage, slowing the rate of hydrolyticHydrolysis The chemical reaction in which a molecule is split by water, typically at a bond that connects two parts of the molecule. In food contact materials, hydrolysis is the primary mechanism by which acid or alkaline cleaning solutions attack susceptible polymers — particularly those with ester linkages (PET, Tritan, PC) or ether linkages (POM). Polymers with all-carbon backbones (PP, HDPE, PTFE) have no hydrolysable bonds and are inherently resistant to aqueous chemical attack. attack compared to standard PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning.. This gives Tritan meaningfully better acid resistance than PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. and dramatically better heat resistance — the KegLand documentation explicitly states that the collection container can handle extended contact with hot liquid at 100 °C.2
Identifying Tritan
Tritan is a proprietary copolyester — it does not have a Resin Identification CodeRIC — Resin Identification Code A numerical code moulded into the base of plastic articles to identify the polymer type, introduced by the Society of the Plastics Industry (now PLASTICS) in 1988 and represented by three chasing arrows forming a triangle with the number inside. Codes 1–7 cover the most common polymer families: 1 = PET, 2 = HDPE, 3 = PVC, 4 = LDPE, 5 = PP, 6 = PS, 7 = other. The RIC identifies the polymer backbone only — it says nothing about the additive package, food grade status, or GMP compliance. Food grade and industrial grade articles of the same polymer carry the same RIC code.. The standard resin identification system covers commodity plastics; Tritan falls outside it. No moulded code will be present on a Tritan article, and the absence of a code should not be taken as evidence that the material is unknown or unverified.
For the FermZilla Tri-Conical collection container, material identification rests on manufacturer documentation. The KegLand assembly guide explicitly names the collection container as "heat resistant Tritan plastic" and states its 100 °C hot liquid rating.2 The replacement container product page confirms "Tritan from Eastman Plastics" and its BPA- and plasticiser-free status.3 This is the strongest form of material confirmation available for a homebrewing article — named manufacturer, named polymer, and linked documentation.
Visually, Tritan is crystal clear with a glass-like appearance. It is noticeably clearer than PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. under typical lighting and has none of the slight blue tint sometimes seen in polycarbonate. The collection container's glass-like transparency is itself a functional feature: it allows the brewer to monitor fermentation activity and assess the volume and composition of collected material without removing the container.
Images showing the collection container in situ on the FermZilla Tri-Conical, the glass-like clarity of the Tritan body, and the base of the container confirming the absence of a RICRIC — Resin Identification Code A numerical code moulded into the base of plastic articles to identify the polymer type, introduced by the Society of the Plastics Industry (now PLASTICS) in 1988 and represented by three chasing arrows forming a triangle with the number inside. Codes 1–7 cover the most common polymer families: 1 = PET, 2 = HDPE, 3 = PVC, 4 = LDPE, 5 = PP, 6 = PS, 7 = other. The RIC identifies the polymer backbone only — it says nothing about the additive package, food grade status, or GMP compliance. Food grade and industrial grade articles of the same polymer carry the same RIC code. code are planned for this section.
Food grade status
Tritan has a well-documented food contact safety profile for a relatively young material — a consequence of Eastman's deliberate investment in regulatory clearance as part of its positioning against polycarbonate. It has been cleared for food contact use by the FDA, EFSA, the European Commission, Health Canada, and NSF International (NSF 51 for food equipment materials and NSF 61 for drinking-water system components).1
Under EU Regulation 10/2011, the TMCD monomer is approved for repeated-use food contact applications.1 The key monomers — DMT and CHDM — are established food contact substances under EU and US frameworks. The specific migration limitsSML — Specific Migration Limit The maximum permitted amount of a substance that may migrate from a food contact material into food or a food simulant, set by EU Regulation 10/2011. Expressed in mg/kg of food. for Tritan's constituent monomers are not approached in normal use.
The full food contact compliance framework — what makes an article food grade, GMPGMP — Good Manufacturing Practice A set of regulated manufacturing requirements under EU Regulation 2023/2006 that food contact material producers must comply with. GMP covers controlled production environments, quality management systems, and traceability — ensuring that a food-approved resin is also processed in conditions that prevent contamination from non-food substances. A material can use an approved additive package and still fail GMP requirements if it is produced in a facility that also processes industrial compounds without adequate separation. requirements, EU simulant testing conditions, DoCDoC — Declaration of Conformity A manufacturer's written statement that a food contact material or article complies with the applicable EU regulations (primarily 1935/2004 and 10/2011). Required at each stage of the commercial supply chain, but not legally required to be provided to end consumers at retail. structure, repeated-use provisions, and what to do without a DoCDoC — Declaration of Conformity A manufacturer's written statement that a food contact material or article complies with the applicable EU regulations (primarily 1935/2004 and 10/2011). Required at each stage of the commercial supply chain, but not legally required to be provided to end consumers at retail. — is covered on the Food contact compliance page. This section covers only what is specific to Tritan.
What makes a Tritan article food grade?
As with all thermoplastics, the polymer backbone is not the primary concern — the distinction between food grade and non-food grade Tritan lies in whether the article has been manufactured under GMPGMP — Good Manufacturing Practice A set of regulated manufacturing requirements under EU Regulation 2023/2006 that food contact material producers must comply with. GMP covers controlled production environments, quality management systems, and traceability — ensuring that a food-approved resin is also processed in conditions that prevent contamination from non-food substances. A material can use an approved additive package and still fail GMP requirements if it is produced in a facility that also processes industrial compounds without adequate separation. conditions using approved additives and colorants. Tritan itself is free of BPA, BPS, phthalates, halogens, chlorine, and compounds with estrogenic or androgenic activity, as confirmed by third-party testing.1 The KegLand replacement container product page explicitly states it is BPA- and plasticiser-free.3
For homebrewing purposes, the collection container is the only Tritan article in the register. KegLand's product documentation confirms the material and its food contact suitability; no further additive-level documentation has been retrieved.
DoC availability for Tritan articles
No Declaration of Conformity has been retrieved from KegLand for the FermZilla Tri-Conical collection container. This is consistent with the pattern across homebrewing equipment generally — the material is named, BPA-free and food-grade claims are made, and no DoCDoC — Declaration of Conformity A manufacturer's written statement that a food contact material or article complies with the applicable EU regulations (primarily 1935/2004 and 10/2011). Required at each stage of the commercial supply chain, but not legally required to be provided to end consumers at retail. is publicly available. The absence of a DoCDoC — Declaration of Conformity A manufacturer's written statement that a food contact material or article complies with the applicable EU regulations (primarily 1935/2004 and 10/2011). Required at each stage of the commercial supply chain, but not legally required to be provided to end consumers at retail. does not indicate non-compliance; it reflects the norm for homebrewing-market articles. For the food contact compliance framework — what this means, how to assess undocumented equipment, and examples of what a DoCDoC — Declaration of Conformity A manufacturer's written statement that a food contact material or article complies with the applicable EU regulations (primarily 1935/2004 and 10/2011). Required at each stage of the commercial supply chain, but not legally required to be provided to end consumers at retail. covers and does not cover — see the Food contact compliance page.
Temperature limits
Tritan's headline temperature advantage over standard copolyesters is well-documented. The KegLand assembly guide explicitly states that the collection container can handle extended contact with hot liquid at 100 °C.2 This is a consequence of the TMCD comonomer: the bulky cyclobutanediol ring restricts chain mobility, raising the heat deflection temperatureHDT — Heat Deflection Temperature The temperature at which a polymer specimen deflects by a defined amount under a specified load, measured under standardised test conditions (ASTM D648 or ISO 75). HDT is a practical indicator of the upper service temperature for a structural plastic article under mechanical stress — above it, the material creeps and deforms rather than returning to its original shape. HDT varies substantially between polymer grades, wall thickness, and geometry, so a material's published HDT range is a guide; the specific article's rated service temperature from its manufacturer is the correct reference for any given use. well above the 40 °C maximum that constrains PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. brewing vessels, and considerably above PPPP — Polypropylene A semi-crystalline polyolefin plastic widely used in fermenter buckets, lids, taps, and airlocks. Excellent chemical resistance across all homebrewing chemical environments. EU Regulation 10/2011 compliant. (40–45 °C for thin-walled containers). In practice, Tritan behaves more like a purpose-designed engineering thermoplastic than a general-purpose polyester at elevated temperatures.
Structural concern. The 100 °C rating is the manufacturer's stated limit for sustained hot liquid contact — the condition most relevant to homebrewing use. Exceeding this in a sustained way risks progressive structural softening and distortion. The failure mode is not sudden; Tritan will deform under load before it fails structurally. For the collection container, which is held under light load at the base of the conical fermenter, the concern threshold is comfortably above anything encountered in normal use.
Migration concern. Elevated temperature accelerates additive migration from any thermoplastic. Tritan's food contact clearances are based on standard EU simulant conditions (40 °C, 10 days), and migration at temperatures approaching 100 °C will be higher than at the test conditions. For the collection container, sustained contact at elevated temperature occurs only during post-fermentation hot water cleaning — brief contact, not extended storage. The migration concern at the rated temperature for cleaning use is low. Tritan's additive package is free of BPA, BPS, phthalates, halogens, and compounds with estrogenic or androgenic activity1 — the absence of these specific substance classes is relevant context when assessing elevated-temperature migration.
No-chill brewing. The collection container is not used for no-chill wortWort Liquid extracted from malted grain during mashing and boiling, before fermentation. The starting point for beer. storage — it sits below the conical and receives room-temperature or fermentation-temperature liquid, not near-boiling wortWort Liquid extracted from malted grain during mashing and boiling, before fermentation. The starting point for beer.. No verdict is needed here; it is simply not the article's role.
Hot water cleaning. The 100 °C rating means the collection container can be cleaned with boiling or near-boiling water without structural concern. The KegLand assembly guide notes the container is heat and chemical resistant and can handle extended hot liquid contact.2
Heat sanitisation. A hot water soak at near-boiling temperature for a short period presents no structural concern for the collection container within its rated limits. ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution. or DESDES — Disinfectant Ethanol Sanitiser ChemiPro DES. An ethanol-based (70–80%) sanitiser with no non-volatile residue. Evaporates completely, leaving no WDC risk. A-rated for all common homebrewing materials. sanitisation at ambient temperature is the standard approach and fully sufficient; hot water sanitisation is an option where convenient.
Compatibility — ABNS: B
Working-dilution ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution. sanitiser (StellarSan, Star SanSAN — Styrene-Acrylonitrile copolymer A transparent plastic used in some airlocks and equipment. The acrylonitrile content gives better chemical resistance than GPPS, particularly against DDBSA in acid-based sanitisers. Rated A for ABNS, unlike GPPS which is rated B/D., Sanipro Rinse, and equivalents) is usable with Tritan at the collection container's exposure level, but is rated B rather than A — a precautionary rating reflecting Tritan's ester backbone and the relative absence of Tritan-specific compatibility data at ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution. concentrations. Both active components are considered separately.
Phosphoric acid component. Tritan's ester linkage is meaningfully more resistant to acid hydrolysisHydrolysis The chemical reaction in which a molecule is split by water, typically at a bond that connects two parts of the molecule. In food contact materials, hydrolysis is the primary mechanism by which acid or alkaline cleaning solutions attack susceptible polymers — particularly those with ester linkages (PET, Tritan, PC) or ether linkages (POM). Polymers with all-carbon backbones (PP, HDPE, PTFE) have no hydrolysable bonds and are inherently resistant to aqueous chemical attack. than standard PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning.'s, because the TMCD comonomer's bulky cyclobutanediol ring introduces steric hindrance around the ester bond. This slows the rate of hydrolyticHydrolysis The chemical reaction in which a molecule is split by water, typically at a bond that connects two parts of the molecule. In food contact materials, hydrolysis is the primary mechanism by which acid or alkaline cleaning solutions attack susceptible polymers — particularly those with ester linkages (PET, Tritan, PC) or ether linkages (POM). Polymers with all-carbon backbones (PP, HDPE, PTFE) have no hydrolysable bonds and are inherently resistant to aqueous chemical attack. attack. At working-dilution ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution. pH (3.0–3.5) and ambient temperature, the ester hydrolysisHydrolysis The chemical reaction in which a molecule is split by water, typically at a bond that connects two parts of the molecule. In food contact materials, hydrolysis is the primary mechanism by which acid or alkaline cleaning solutions attack susceptible polymers — particularly those with ester linkages (PET, Tritan, PC) or ether linkages (POM). Polymers with all-carbon backbones (PP, HDPE, PTFE) have no hydrolysable bonds and are inherently resistant to aqueous chemical attack. rate for Tritan is negligible for any single contact event. No concern from phosphoric acid at working dilution.
DDBSADDBSA — Dodecylbenzenesulfonic acid The active surfactant in acid-based no-rinse sanitisers (ABNS). A long-chain anionic surfactant that disrupts microbial cell membranes at low pH. Non-volatile — it concentrates on surfaces as water evaporates. component. Tritan contains terephthalate-derived aromatic rings — the same structural feature that gives PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. its pi–pi stacking susceptibility to DDBSADDBSA — Dodecylbenzenesulfonic acid The active surfactant in acid-based no-rinse sanitisers (ABNS). A long-chain anionic surfactant that disrupts microbial cell membranes at low pH. Non-volatile — it concentrates on surfaces as water evaporates.. The TMCD comonomer partially disrupts chain regularity and reduces crystallinity compared to standard PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning., which may slightly increase the accessible amorphous fraction. The net DDBSADDBSA — Dodecylbenzenesulfonic acid The active surfactant in acid-based no-rinse sanitisers (ABNS). A long-chain anionic surfactant that disrupts microbial cell membranes at low pH. Non-volatile — it concentrates on surfaces as water evaporates. interaction for Tritan versus PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. is not characterised to a published threshold — both materials carry aromatic rings susceptible to non-covalent pi–pi interaction with DDBSADDBSA — Dodecylbenzenesulfonic acid The active surfactant in acid-based no-rinse sanitisers (ABNS). A long-chain anionic surfactant that disrupts microbial cell membranes at low pH. Non-volatile — it concentrates on surfaces as water evaporates.'s dodecylbenzene group, and Tritan's behaviour under accumulated DDBSADDBSA — Dodecylbenzenesulfonic acid The active surfactant in acid-based no-rinse sanitisers (ABNS). A long-chain anionic surfactant that disrupts microbial cell membranes at low pH. Non-volatile — it concentrates on surfaces as water evaporates. WDCWDC — Wet-Dry Cycle The process by which liquid applied to a surface evaporates, leaving non-volatile components concentrated as a dry residue. A single WDC deposits concentrated DDBSA and phosphoric acid on every sanitised surface. Repeated WDC events without cleaning cause residue to accumulate, progressively increasing exposure. Post-brew cleaning resets accumulation to zero. See: The wet-dry cycle model. conditions is not known from direct experimental data. At working dilution and a single sanitisation cycle, the interaction is expected to be minor and reversible, as it is for PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning..
No published damage threshold. No specific published threshold exists for DDBSADDBSA — Dodecylbenzenesulfonic acid The active surfactant in acid-based no-rinse sanitisers (ABNS). A long-chain anionic surfactant that disrupts microbial cell membranes at low pH. Non-volatile — it concentrates on surfaces as water evaporates.-driven damage in Tritan under homebrewing WDCWDC — Wet-Dry Cycle The process by which liquid applied to a surface evaporates, leaving non-volatile components concentrated as a dry residue. A single WDC deposits concentrated DDBSA and phosphoric acid on every sanitised surface. Repeated WDC events without cleaning cause residue to accumulate, progressively increasing exposure. Post-brew cleaning resets accumulation to zero. See: The wet-dry cycle model. conditions. The B rating reflects this uncertainty — Tritan's chemistry warrants the same caution as PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. on DDBSADDBSA — Dodecylbenzenesulfonic acid The active surfactant in acid-based no-rinse sanitisers (ABNS). A long-chain anionic surfactant that disrupts microbial cell membranes at low pH. Non-volatile — it concentrates on surfaces as water evaporates. WDCWDC — Wet-Dry Cycle The process by which liquid applied to a surface evaporates, leaving non-volatile components concentrated as a dry residue. A single WDC deposits concentrated DDBSA and phosphoric acid on every sanitised surface. Repeated WDC events without cleaning cause residue to accumulate, progressively increasing exposure. Post-brew cleaning resets accumulation to zero. See: The wet-dry cycle model. accumulation, without the benefit of PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning.'s extensive real-world contact data. The conclusion that Tritan is appropriate for the collection container role rests on the chemistry (TMCD steric hindrance, limited single-cycle exposure), on the article's Zone A geometry, and on the low exposure level of the specific role — not on a published Tritan-specific damage threshold.
Single cycle vs accumulated WDCWDC — Wet-Dry Cycle The process by which liquid applied to a surface evaporates, leaving non-volatile components concentrated as a dry residue. A single WDC deposits concentrated DDBSA and phosphoric acid on every sanitised surface. Repeated WDC events without cleaning cause residue to accumulate, progressively increasing exposure. Post-brew cleaning resets accumulation to zero. See: The wet-dry cycle model.. A single sanitisation cycle at working dilution does not create a WDCWDC — Wet-Dry Cycle The process by which liquid applied to a surface evaporates, leaving non-volatile components concentrated as a dry residue. A single WDC deposits concentrated DDBSA and phosphoric acid on every sanitised surface. Repeated WDC events without cleaning cause residue to accumulate, progressively increasing exposure. Post-brew cleaning resets accumulation to zero. See: The wet-dry cycle model. concern for Tritan. The concern, where it exists, is cumulative: repeated cycles without cleaning between uses allow ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution. residue to concentrate on surfaces that dry between cycles. For articles in active fermentation use, the vessel interior is occupied by wortWort Liquid extracted from malted grain during mashing and boiling, before fermentation. The starting point for beer. or beer for the majority of the service period — any ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution. contact is brief and followed by sustained liquid contact that dilutes residue further, meaning interior WDCWDC — Wet-Dry Cycle The process by which liquid applied to a surface evaporates, leaving non-volatile components concentrated as a dry residue. A single WDC deposits concentrated DDBSA and phosphoric acid on every sanitised surface. Repeated WDC events without cleaning cause residue to accumulate, progressively increasing exposure. Post-brew cleaning resets accumulation to zero. See: The wet-dry cycle model. accumulation is low under normal use. External surfaces should be rinsed of any ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution. spill or overspray promptly; accumulated dried residue on exterior surfaces contributes to WDCWDC — Wet-Dry Cycle The process by which liquid applied to a surface evaporates, leaving non-volatile components concentrated as a dry residue. A single WDC deposits concentrated DDBSA and phosphoric acid on every sanitised surface. Repeated WDC events without cleaning cause residue to accumulate, progressively increasing exposure. Post-brew cleaning resets accumulation to zero. See: The wet-dry cycle model. exposure in the same way as interior residue. Cleaning between uses resets accumulation regardless of article type.
Structural vs migration. These are distinct concerns. Any WDCWDC — Wet-Dry Cycle The process by which liquid applied to a surface evaporates, leaving non-volatile components concentrated as a dry residue. A single WDC deposits concentrated DDBSA and phosphoric acid on every sanitised surface. Repeated WDC events without cleaning cause residue to accumulate, progressively increasing exposure. Post-brew cleaning resets accumulation to zero. See: The wet-dry cycle model.-driven chemical interaction at the Tritan surface is a structural concern — surface softening, micro-crazing, or ESCESC — Environmental Stress Cracking Failure of a polymer under the combined action of mechanical stress and chemical exposure. The failure mode of POM DuoTight collars under repeated ABNS WDC cycles. Occurs below the material's normal stress threshold when chemical exposure is present. at mechanically stressed geometry. Migration of Tritan monomers into beer or sanitiser is a separate question governed by the food contact compliance framework and Eastman's safety data. At homebrewing temperatures and contact times, migration from compliant undamaged Tritan is expected to be well within the conservative EU simulant test conditions. A damaged surface — one showing cloudiness, crazing, or dimensional change — should be retired regardless of the cause, because the compliance data no longer applies.
Collection container geometry — Zone A. The collection container interior is Zone A — open surface geometry. ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution. drains freely from the smooth interior wall; there are no thread roots, confined crevices, or compressed interfaces where residue concentrates. The DuoTight case study, in which Zone B geometry drove progressive failure, is instructive context: the collection container does not share that geometry. The threaded ports on the collection container lid — if carbonation caps or other fittings are attached — are the only Zone B interfaces present, and ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution. contact at those points follows the same caution as for any threaded fitting.
Articles by zone:
| Article | Zone | WDCWDC — Wet-Dry Cycle The process by which liquid applied to a surface evaporates, leaving non-volatile components concentrated as a dry residue. A single WDC deposits concentrated DDBSA and phosphoric acid on every sanitised surface. Repeated WDC events without cleaning cause residue to accumulate, progressively increasing exposure. Post-brew cleaning resets accumulation to zero. See: The wet-dry cycle model. concern |
|---|---|---|
| Collection container interior | A — open surface | Low; drains freely, cleaned between batches |
| Threaded ports (if fittings attached) | B — confined geometry | Monitor; residue can concentrate at thread roots |
Per-material accumulation charts — mapping WDCWDC — Wet-Dry Cycle The process by which liquid applied to a surface evaporates, leaving non-volatile components concentrated as a dry residue. A single WDC deposits concentrated DDBSA and phosphoric acid on every sanitised surface. Repeated WDC events without cleaning cause residue to accumulate, progressively increasing exposure. Post-brew cleaning resets accumulation to zero. See: The wet-dry cycle model. exposure against damage thresholds by zone — are in preparation and will be added to this register.
Compatibility — DES: A
DESDES — Disinfectant Ethanol Sanitiser ChemiPro DES. An ethanol-based (70–80%) sanitiser with no non-volatile residue. Evaporates completely, leaving no WDC risk. A-rated for all common homebrewing materials. (ethanol-based sanitiser) at 70–80% has no meaningful interaction with Tritan at typical contact times. Tritan's ester backbone is susceptible in principle to ester hydrolysisHydrolysis The chemical reaction in which a molecule is split by water, typically at a bond that connects two parts of the molecule. In food contact materials, hydrolysis is the primary mechanism by which acid or alkaline cleaning solutions attack susceptible polymers — particularly those with ester linkages (PET, Tritan, PC) or ether linkages (POM). Polymers with all-carbon backbones (PP, HDPE, PTFE) have no hydrolysable bonds and are inherently resistant to aqueous chemical attack., but ethanol alone is not an effective hydrolysisHydrolysis The chemical reaction in which a molecule is split by water, typically at a bond that connects two parts of the molecule. In food contact materials, hydrolysis is the primary mechanism by which acid or alkaline cleaning solutions attack susceptible polymers — particularly those with ester linkages (PET, Tritan, PC) or ether linkages (POM). Polymers with all-carbon backbones (PP, HDPE, PTFE) have no hydrolysable bonds and are inherently resistant to aqueous chemical attack. agent — hydrolysisHydrolysis The chemical reaction in which a molecule is split by water, typically at a bond that connects two parts of the molecule. In food contact materials, hydrolysis is the primary mechanism by which acid or alkaline cleaning solutions attack susceptible polymers — particularly those with ester linkages (PET, Tritan, PC) or ether linkages (POM). Polymers with all-carbon backbones (PP, HDPE, PTFE) have no hydrolysable bonds and are inherently resistant to aqueous chemical attack. requires either strong acid or strong alkali as the active agent, not a neutral alcohol. The ISM chemical compatibility chart rates PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. (the closest-characterised copolyester) as A for ethanol at all concentrations; Tritan's TMCD-enhanced ester stability gives no reason to expect worse performance.
For spray application — the standard DESDES — Disinfectant Ethanol Sanitiser ChemiPro DES. An ethanol-based (70–80%) sanitiser with no non-volatile residue. Evaporates completely, leaving no WDC risk. A-rated for all common homebrewing materials. use case — contact is brief and the ethanol evaporates, leaving no residue. No concern.
For sealed sustained contact — storing dilute or concentrated ethanol-based sanitiser in a Tritan vessel for extended periods — slow ethanol permeation through the vessel wall is theoretically possible at high concentrations over weeks to months, as it is for PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. and other polyesters. For a collection container or similar article used and emptied between batches, this is not a realistic scenario. If using a Tritan article for long-term DESDES — Disinfectant Ethanol Sanitiser ChemiPro DES. An ethanol-based (70–80%) sanitiser with no non-volatile residue. Evaporates completely, leaving no WDC risk. A-rated for all common homebrewing materials. storage, glass is the more appropriate choice as it is for any high-concentration alcohol storage.
Tritan's suitability for short-term contact with ethanol-based and chemical solutions is further supported by KegLand listing uses for the collection container that include reagent bottle and yeast culturing — both of which presuppose compatibility with sanitising solutions at typical contact times.2
Compatibility — Cleaning: A
Tritan is compatible with all cleaning product categories used in homebrewing at working concentrations and temperatures. Throughout this page Tritan is compared to PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. where relevant — PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. is the closest well-characterised copolyester and the most useful benchmark; Tritan is not a polyolefinPolyolefin A class of polymers made by polymerising simple alkene (olefin) monomers — propylene for polypropylene, ethylene for polyethylene. The resulting polymer has an all-carbon backbone with no functional groups susceptible to hydrolysis, which is the primary reason polyolefins have excellent resistance to acids, alkalis, and aqueous environments. PP and HDPE are both polyolefins. and PPPP — Polypropylene A semi-crystalline polyolefin plastic widely used in fermenter buckets, lids, taps, and airlocks. Excellent chemical resistance across all homebrewing chemical environments. EU Regulation 10/2011 compliant. or HDPEHDPE — High-Density Polyethylene A polyolefin plastic used in fermenter taps and spray bottles. Slightly better chemical barrier properties than PP. EU Regulation 10/2011 compliant. comparisons are less informative. The TMCD-enhanced ester backbone provides better resistance to alkaline hydrolysisHydrolysis The chemical reaction in which a molecule is split by water, typically at a bond that connects two parts of the molecule. In food contact materials, hydrolysis is the primary mechanism by which acid or alkaline cleaning solutions attack susceptible polymers — particularly those with ester linkages (PET, Tritan, PC) or ether linkages (POM). Polymers with all-carbon backbones (PP, HDPE, PTFE) have no hydrolysable bonds and are inherently resistant to aqueous chemical attack. than standard PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning., and the heat resistance advantage (100 °C rated) means hot water cleaning is available as an option where it is not for PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. articles.
KegLand markets StellarClean as Powerful Brewery Wash; Five Star makes a separate product, Powdered Brewery Wash. Different products, different formulations — but both are alkaline percarbonate cleaners and both rate A for Tritan with no contact time limit at working concentration.
Alkaline percarbonate cleaners (StellarClean, Five Star PBWPBW — Powdered Brewery Wash A sodium metasilicate and percarbonate-based alkaline cleaner widely used in brewing. Removes organic soil through alkaline hydrolysis. A-rated for all common homebrewing plastic and elastomer materials at working concentrations., ChemClean, ChemiPro Wash, and equivalents): The active cleaning agent is sodium percarbonate, which breaks down to hydrogen peroxide and sodium carbonate in solution. Tritan's ester linkage is susceptible to alkaline hydrolysisHydrolysis The chemical reaction in which a molecule is split by water, typically at a bond that connects two parts of the molecule. In food contact materials, hydrolysis is the primary mechanism by which acid or alkaline cleaning solutions attack susceptible polymers — particularly those with ester linkages (PET, Tritan, PC) or ether linkages (POM). Polymers with all-carbon backbones (PP, HDPE, PTFE) have no hydrolysable bonds and are inherently resistant to aqueous chemical attack. in principle, but working-concentration percarbonate solution at homebrewing temperatures (ambient to 40 °C) presents a negligible hydrolysisHydrolysis The chemical reaction in which a molecule is split by water, typically at a bond that connects two parts of the molecule. In food contact materials, hydrolysis is the primary mechanism by which acid or alkaline cleaning solutions attack susceptible polymers — particularly those with ester linkages (PET, Tritan, PC) or ether linkages (POM). Polymers with all-carbon backbones (PP, HDPE, PTFE) have no hydrolysable bonds and are inherently resistant to aqueous chemical attack. rate. These cleaners are appropriate for Tritan at standard contact times — a 20–30 minute soak at working concentration. Extended hot soaks (hours at elevated temperature) are not necessary and should be avoided. Rating: A.
Phosphate-based alkaline cleaners (Grainfather High Performance Cleaner, and equivalents): Sodium tripolyphosphate (STPP) as the primary cleaning agent, with trace metasilicate. Tritan is fully resistant to STPP and phosphate-based formulations at homebrewing concentrations. Rating: A.
Oxidising cleaners (ChemiPro OXI, StellarOxy, and equivalents): No oxidative attack mechanism on Tritan's saturated polyester backbone at homebrewing concentrations. Rating: A.
Caustic cleaners (NaOH-based — VWP and equivalents): Out of scope for this guide; see the Cleaning page for context. Tritan's ester linkage is more resistant to alkaline hydrolysisHydrolysis The chemical reaction in which a molecule is split by water, typically at a bond that connects two parts of the molecule. In food contact materials, hydrolysis is the primary mechanism by which acid or alkaline cleaning solutions attack susceptible polymers — particularly those with ester linkages (PET, Tritan, PC) or ether linkages (POM). Polymers with all-carbon backbones (PP, HDPE, PTFE) have no hydrolysable bonds and are inherently resistant to aqueous chemical attack. than standard PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. due to the TMCD structure, but concentrated NaOH is not a homebrewing cleaning agent and no verdict is offered here.
Compatibility — beer/wort: A
Tritan presents no compatibility concern for any beer or wortWort Liquid extracted from malted grain during mashing and boiling, before fermentation. The starting point for beer. contact encountered in homebrewing. The TMCD-enhanced ester backbone is more resistant to hydrolysisHydrolysis The chemical reaction in which a molecule is split by water, typically at a bond that connects two parts of the molecule. In food contact materials, hydrolysis is the primary mechanism by which acid or alkaline cleaning solutions attack susceptible polymers — particularly those with ester linkages (PET, Tritan, PC) or ether linkages (POM). Polymers with all-carbon backbones (PP, HDPE, PTFE) have no hydrolysable bonds and are inherently resistant to aqueous chemical attack. than standard PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. across all relevant pH and alcohol ranges, and the ISM compatibility chart rates PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. — the conservative benchmark for Tritan — as A for all organic acids and ethanol concentrations encountered in brewing.4
Standard wortWort Liquid extracted from malted grain during mashing and boiling, before fermentation. The starting point for beer. (pre-fermentation): pH 5.0–5.4, brief contact during transfer. No concern.
Standard beer (4–8% ABV, pH 4.0–4.4): Ethanol at these concentrations presents no concern — PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. is rated A for ethanol at all concentrations per ISM, and Tritan's TMCD structure provides no reason to expect worse performance. No concern.
High-ABV beer (above 8%): Tritan remains A through the full range of homebrewing alcohol levels. No concern for high-gravity styles.
Sour beer (pH 3.2–3.5, lactic and acetic acid dominant): The most chemically demanding beer contact scenario. PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. is rated A for acetic and lactic acid at homebrewing concentrations; Tritan's improved hydrolyticHydrolysis The chemical reaction in which a molecule is split by water, typically at a bond that connects two parts of the molecule. In food contact materials, hydrolysis is the primary mechanism by which acid or alkaline cleaning solutions attack susceptible polymers — particularly those with ester linkages (PET, Tritan, PC) or ether linkages (POM). Polymers with all-carbon backbones (PP, HDPE, PTFE) have no hydrolysable bonds and are inherently resistant to aqueous chemical attack. resistance relative to PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. provides additional margin. No concern.
Hot wortWort Liquid extracted from malted grain during mashing and boiling, before fermentation. The starting point for beer.. Tritan's 100 °C rating means it is structurally capable of receiving hot wortWort Liquid extracted from malted grain during mashing and boiling, before fermentation. The starting point for beer. — a scenario that exceeds PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning.'s limits entirely. Whether a specific Tritan article is appropriate for hot wortWort Liquid extracted from malted grain during mashing and boiling, before fermentation. The starting point for beer. contact depends on the article's geometry, wall thickness, and the documentation available for that use. For the collection container, hot wortWort Liquid extracted from malted grain during mashing and boiling, before fermentation. The starting point for beer. is not the design use case; it collects fermentation byproducts at ambient or fermentation temperature. See the temperature limits section for the full structural and migration picture.
Tritan in homebrewing — the practical picture
Tritan is a capable food contact material with a well-documented safety profile and a genuine temperature advantage over other clear plastics used in homebrewing. It is not common — the only homebrewing articles currently in the register are collection containers — but its chemistry makes it well-suited to a wider range of roles than PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning., and a reader assessing a Tritan article not covered here should be able to apply the principles on this page directly.
What Tritan is good for. Any role that benefits from optical clarity combined with better-than-PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning. chemical and thermal resistance. Collection and harvesting of yeast, trub, or hop material. Reagent and sample bottles — KegLand explicitly lists these as uses for the collection container,2 implying compatibility with a wide range of aqueous and ethanol-based solutions at typical contact times. Yeast culturing and propagation vessels, where sanitisation discipline is important and clarity is useful for monitoring. Beer sampling. Carbonation of small volumes. Any application where a glass vessel would be preferred but impact resistance is needed — Tritan’s glass-like clarity and its toughness make it a practical alternative to glass in environments where breakage is a concern.
What Tritan is not good for. Primary fermentation vessels — not because of a compatibility concern, but because Tritan articles in the homebrewing market are small-volume specialised components, not fermenter-scale vessels. Gas permeability of Tritan has not been characterised for homebrewing purposes; for oxygen-sensitive fermentations, stainless or glass remains the better-documented choice. Long-term storage of high-concentration ethanol or chemical solutions — glass is more appropriate for sustained contact at elevated alcohol concentrations.
Cleaning Tritan. Any alkaline percarbonate cleaner at working concentration — StellarClean, Five Star PBWPBW — Powdered Brewery Wash A sodium metasilicate and percarbonate-based alkaline cleaner widely used in brewing. Removes organic soil through alkaline hydrolysis. A-rated for all common homebrewing plastic and elastomer materials at working concentrations., ChemiPro Wash, and equivalents — cleans Tritan without concern. Soak at ambient to 40 °C, rinse thoroughly. The 100 °C rating means hot water rinsing and cleaning is available where convenient — an advantage over PETPET — Polyethylene terephthalate The plastic used in the FermZilla All Rounder, Oxebar mini keg, and PET bottles. Recycling code ♻️1. Extensively tested for food contact with carbonated beverages. Do not exceed 40 °C when cleaning.. No material-specific cleaning restrictions apply.
Sanitising Tritan. ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution. (StellarSan, Star SanSAN — Styrene-Acrylonitrile copolymer A transparent plastic used in some airlocks and equipment. The acrylonitrile content gives better chemical resistance than GPPS, particularly against DDBSA in acid-based sanitisers. Rated A for ABNS, unlike GPPS which is rated B/D., Sanipro Rinse, and equivalents) and DESDES — Disinfectant Ethanol Sanitiser ChemiPro DES. An ethanol-based (70–80%) sanitiser with no non-volatile residue. Evaporates completely, leaving no WDC risk. A-rated for all common homebrewing materials. (ethanol-based sanitisers) are both compatible at working dilution. The B rating for ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution. reflects a precautionary position on accumulated WDCWDC — Wet-Dry Cycle The process by which liquid applied to a surface evaporates, leaving non-volatile components concentrated as a dry residue. A single WDC deposits concentrated DDBSA and phosphoric acid on every sanitised surface. Repeated WDC events without cleaning cause residue to accumulate, progressively increasing exposure. Post-brew cleaning resets accumulation to zero. See: The wet-dry cycle model. at DDBSADDBSA — Dodecylbenzenesulfonic acid The active surfactant in acid-based no-rinse sanitisers (ABNS). A long-chain anionic surfactant that disrupts microbial cell membranes at low pH. Non-volatile — it concentrates on surfaces as water evaporates.-susceptible geometry, not a prohibition. For Zone A geometry — smooth interior surfaces that drain freely — ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution. is appropriate with normal use discipline: clean between uses, drain thoroughly after sanitising, do not allow sanitiser to dry and concentrate on surfaces repeatedly without cleaning. Hot water sanitisation at near-boiling temperature is also an option within the rated limits.
Migration. Tritan's additive package is free of BPA, BPS, phthalates, halogens, and compounds with estrogenic or androgenic activity, as confirmed by third-party testing and multiple regulatory clearances.1 Migration from compliant, undamaged Tritan at homebrewing temperatures is expected to be well within the conservative EU simulant test conditions. A damaged surface — one showing cloudiness, crazing, or dimensional change — should be retired, not because migration risk is known to be elevated, but because the compliance data no longer applies to a damaged article.
Cost and service life. Tritan components in the homebrewing market are moderately priced relative to their function. They are not consumables in the way that PPPP — Polypropylene A semi-crystalline polyolefin plastic widely used in fermenter buckets, lids, taps, and airlocks. Excellent chemical resistance across all homebrewing chemical environments. EU Regulation 10/2011 compliant. buckets are, but they are not indefinite either — see Assessing and retiring equipment below. The cost of a replacement collection container is not the cost of a batch.
Assessing and retiring equipment
Tritan is tough and chemically resistant, but it is not indefinite. The signals that indicate a Tritan article should be replaced rather than cleaned:
Cloudiness or loss of clarity. Tritan's defining characteristic is its glass-like optical clarity. Any localised or general cloudiness — haze, milkiness, or a frosted appearance that was not present when the article was new — is a signal that the surface has been chemically or mechanically compromised. Cloudiness in a clear vessel is the earliest visible sign of surface degradation; a cloudy Tritan article is harder to clean effectively and the compliance basis no longer applies.
Crazing or surface cracking. Fine networks of cracks on the surface, particularly around fittings, threaded ports, or areas that have been under mechanical stress. Crazing in Tritan indicates stress-related surface failure — either from mechanical overload, chemical exposure at a stressed surface, or both. A crazed surface cannot be reliably sanitised and should be retired.
Scratching. Clean Tritan with a soft cloth only — never a brush or abrasive pad. Scratches destroy the smooth surface that allows sanitising chemistry to work reliably and that makes Tritan's clarity useful for monitoring. A visibly scratched interior surface that cannot be restored to a clean, consistent finish after a thorough cleaning soak has exceeded its useful service life.
Warping or dimensional change. Any distortion that prevents a lid from seating correctly, causes a fitting to leak, or means a threaded port no longer accepts a cap at the correct torque. Warped Tritan is a structural and hygiene problem.
Persistent staining. If a thorough alkaline percarbonate soak and rinse does not restore a visually clean, clear surface, the article surface is too degraded for reliable sanitation.
Damage at threaded ports. The threaded ports on collection containers and similar articles are the highest-stress geometry on the article. Thread roots that show whitening, cracking, or deformation — or ports that have been over-torqued with carbonation caps or fittings — should be assessed carefully. Damaged threads are a Zone B hygiene concern as well as a structural one.
Pressure use and ESCESC — Environmental Stress Cracking Failure of a polymer under the combined action of mechanical stress and chemical exposure. The failure mode of POM DuoTight collars under repeated ABNS WDC cycles. Occurs below the material's normal stress threshold when chemical exposure is present.. The collection container can be used as a pressure vessel — KegLand lists carbonation of small samples as a supported use.2 Tritan is susceptible to environmental stress cracking (ESCESC — Environmental Stress Cracking Failure of a polymer under the combined action of mechanical stress and chemical exposure. The failure mode of POM DuoTight collars under repeated ABNS WDC cycles. Occurs below the material's normal stress threshold when chemical exposure is present.) under the combination of mechanical stress and chemical exposure: a surface under tension — from internal pressure, from an over-torqued fitting, or from a stressed thread root — is more vulnerable to chemical attack at that point than an unstressed surface. Any Tritan article used under pressure should be inspected before each use for crazing, whitening, or deformation at stressed geometry, particularly around the threaded ports and lid seal. Do not use a visibly damaged article under pressure.
The principle across all these signals is the same: compliance testing is conducted on undamaged, GMPGMP — Good Manufacturing Practice A set of regulated manufacturing requirements under EU Regulation 2023/2006 that food contact material producers must comply with. GMP covers controlled production environments, quality management systems, and traceability — ensuring that a food-approved resin is also processed in conditions that prevent contamination from non-food substances. A material can use an approved additive package and still fail GMP requirements if it is produced in a facility that also processes industrial compounds without adequate separation.-manufactured equipment. Once visible damage is present, the compliance data does not apply — not because the risk is known to be elevated, but because it is unknown. Tritan collection containers and similar articles are not expensive relative to the cost of a batch.
Summary by article type
Tritan rates A across DESDES — Disinfectant Ethanol Sanitiser ChemiPro DES. An ethanol-based (70–80%) sanitiser with no non-volatile residue. Evaporates completely, leaving no WDC risk. A-rated for all common homebrewing materials., Cleaning, and beer/wortWort Liquid extracted from malted grain during mashing and boiling, before fermentation. The starting point for beer. columns, and B for ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution.. The table below covers the Tritan articles currently in the register. The articles listed here represent known examples; this is not an exhaustive list. A reader with an unlisted Tritan article should use the table as a reference — applying the principles on this page to their specific article and its geometry. The table aims to cover the zone geometries most likely to be encountered for Tritan in homebrewing; a new article in a geometry not listed here should be assessed using the WDC zone model.
| Article | Food grade | Temp limits | ABNSABNS — Acid-Based No-Rinse Sanitiser The class of acid-based sanitisers used in homebrewing, combining phosphoric acid with an anionic alkylbenzenesulfonate surfactant. The acid creates a low-pH environment hostile to microorganisms; the surfactant disrupts cell membranes. Examples: Star San, Sanipro Rinse, StellarSan, Chemsan. Approved for use on food-contact surfaces without rinsing when used at the manufacturer's specified dilution. WDCWDC — Wet-Dry Cycle The process by which liquid applied to a surface evaporates, leaving non-volatile components concentrated as a dry residue. A single WDC deposits concentrated DDBSA and phosphoric acid on every sanitised surface. Repeated WDC events without cleaning cause residue to accumulate, progressively increasing exposure. Post-brew cleaning resets accumulation to zero. See: The wet-dry cycle model. | DESDES — Disinfectant Ethanol Sanitiser ChemiPro DES. An ethanol-based (70–80%) sanitiser with no non-volatile residue. Evaporates completely, leaving no WDC risk. A-rated for all common homebrewing materials. | Cleaning |
|---|---|---|---|---|---|
| Collection container (FermZilla Tri-Conical, 600ml/1000ml) | KegLand documentation confirms Tritan from Eastman; BPA- and plasticiser-free stated.3 No DoCDoC — Declaration of Conformity A manufacturer's written statement that a food contact material or article complies with the applicable EU regulations (primarily 1935/2004 and 10/2011). Required at each stage of the commercial supply chain, but not legally required to be provided to end consumers at retail. retrieved. See Food contact compliance. | Rated to 100 °C sustained hot liquid contact (KegLand).2 Hot water cleaning and sanitisation within limits. Not used for no-chill wortWort Liquid extracted from malted grain during mashing and boiling, before fermentation. The starting point for beer.. | Zone A interior — low WDCWDC — Wet-Dry Cycle The process by which liquid applied to a surface evaporates, leaving non-volatile components concentrated as a dry residue. A single WDC deposits concentrated DDBSA and phosphoric acid on every sanitised surface. Repeated WDC events without cleaning cause residue to accumulate, progressively increasing exposure. Post-brew cleaning resets accumulation to zero. See: The wet-dry cycle model. risk; drains freely. Threaded ports are Zone B — monitor if carbonation caps or fittings are regularly attached. Inspect before pressure use; do not use damaged article under pressure. | A | A |
The BrewBuilt 2-inch Tri-Clover Collection Container Kit (KegLand) is a larger-format Tritan collection vessel in a different geometry. It has not been separately assessed; the principles on this page apply.