NSF H1, ISO 21469 and NSF 537 explained for HACCP, BRC and GFSI compliance
Food grade lubricants: what auditors check and what to have ready
A lubricant without the right certification on record is an audit finding. So is a maintenance log that cannot show which product was applied to which machine on which date. Both come up repeatedly in BRCGS, IFS Food and GFSI-benchmarked audits, and neither requires much to fix.
This article focuses on the two things that most often go wrong in practice, what NSF 537 changes for PFAS documentation specifically, and a checklist you can use to check your own position before the auditor arrives. For a full overview of Interflon's food grade lubricants, including our NSF H1 certified range and PFAS-free products, visit the main food grade page.
NSF H1 and ISO 21469: two certifications, two different questions
NSF H1 is product-level registration. It confirms the formulation is acceptable for incidental food contact. NSF H1 is listed by product on the NSF White Book, and that listing is what auditors verify, not the data sheet your supplier gave you two years ago.
ISO 21469 is manufacturer-level certification. It covers the hygiene conditions under which the lubricant is made, packaged and handled. Factory level, not product level. It is not a standard requirement in BRCGS or IFS Food, but some retailers and customers ask for it as an additional condition of supplier approval. Where it is required, a manufacturer certificate is needed as a separate document. Having NSF H1 on the product does not imply ISO 21469 at the factory.
Both can be required. They are not interchangeable.
What NSF 537 changes for your PFAS documentation
Until NSF 537 existed, PFAS-free was a supplier claim. You had a declaration, the auditor had to accept it on trust, and the conversation could go in any direction depending on how much the auditor knew about PFAS chemistry.
NSF 537 is a voluntary, commercial certification administered by NSF International, the same organisation that runs the NSF H1 programme. It is not a legal requirement, and there is no global regulation that mandates it. What it does is give a supplier claim an independent, verifiable foundation. Products certified under NSF 537 appear in the NSF White Book with a listing number that anyone can check.
In practice, that means one URL, one lookup, and two independently verified facts: food-grade status and PFAS-free status. Whether an auditor or procurement team requires NSF 537 specifically depends on the scheme version and any retailer codes in play, but where PFAS-free needs to be substantiated, a third-party listing is considerably stronger than a supplier declaration.
Interflon's food-grade range carries both NSF H1 registration and NSF 537 certification. Both are live in the NSF White Book.
What to have ready: the short checklist
The documentation points that come up most consistently in lubricant-related audit clauses across BRCGS, IFS Food and HACCP-based systems.
| Category | What to have ready | Category |
|---|---|---|
| NSF H1 registration | Listed per product and verified via NSF certificate and NSF White Book | Auditors verify the live listing, not a historical document. The listing is the evidence. |
| ISO 21469 (if required) | Manufacturer certificate, separate from NSF H1 product registration | Not a standard BRCGS or IFS Food requirement, but some retailers and customers require it as an additional supplier condition. Product approval does not cover factory hygiene. |
| NSF 537 (if PFAS-free is declared) | NSF 537 certification. Listed per product and verified via NSF certificate and NSF White Book | Where PFAS-free needs to be substantiated, a third-party listing is stronger than a supplier declaration. Removes reliance on trust. |
| Lubricant register | Product name, NSF registration number, approved application points, maximum application quantity per point. Lubricants should also appear as a controlled chemical input in your HACCP study or prerequisite programme documentation. | Auditors cross-reference what is in use against what is approved, and check that lubricants are documented as a controlled hazard, not just an approved product. |
| Application records | Product applied, lubrication point, date, quantity, operative, retrievable per asset | Traceability requirement. In high-care zones this extends to batch-level identification. |
| Storage and segregation | Labelled storage, food-grade products identified and separated, shelf life managed | Misapplication risk. Inadequate storage is a standalone finding. |
One practical lever: rationalise the range
The facilities with the fewest lubricant-related audit observations are usually running a consolidated range. Instead of managing documentation for 15 or 20 products, many of them near-duplicates from different suppliers, they have 5 or 6 fully certified products covering all application points.
A shorter register is easier to verify and harder to get wrong. It also removes the risk of an unapproved product being used simply because it was the one on the shelf.
Interflon's Technical Advisors do this as part of a line assessment. If your current range has grown over time without a review, that is a practical place to start.
See how other F&B producers rationalised their range and documented the results
If application records are a weak point, ILAC®, Interflon's lubrication management software, is worth looking at. It keeps a complete lubrication plan per asset and produces export-ready records for audit review, with exports to SAP PM and IBM Maximo.
Frequently Asked Questions
NSF H1 registration can lapse or change. A reformulated product may lose its existing listing, which means a certificate from two years ago is not reliable evidence of current registration status. The indepent and reliable source is the live NSF White Book at nsfwhitebook.org.
In addition Interflon links from every product page directly to the current NSF certification, so for Interflon products the verification is always one click from the product itself.
The difference between GFSI, BRCGS and IFS Food is that GFSI is a benchmarking organisation, not a certification scheme. GFSI benchmarks and recognises food safety certification programmes against its Benchmarking Requirements. BRCGS Food Safety and IFS Food are two examples of GFSI-recognised schemes. Because many major retailers accept certification to a GFSI-recognised scheme, these names often appear together in supplier requirements. There is no separate “GFSI audit”; in practice, this means an audit against a GFSI-recognised scheme such as BRCGS Food Safety, IFS Food or another recognised programme.
PFAS regulation is influencing lubricant requirements in Europe, although there is not yet a broad EU ban on PFAS in industrial lubricants as a category. A wide PFAS restriction under REACH has been proposed, but the final scope, transition periods and date of application are not yet confirmed.
In practice, customer and retailer requirements are already moving faster than legislation. Some food manufacturers now ask for PFAS-free declarations or independent verification as part of supplier approval and audit preparation.
Interflon’s PFAS-free lubrication technology was developed as a deliberate technology decision, not as a short-term compliance response. For food manufacturers, NSF 537 certification provides independent, product-level verification of PFAS-free status through the NSF listing.
If you already have NSF H1, you do not automatically have ISO 21469. NSF H1 and ISO 21469 are not the same. NSF H1 is product-level registration for lubricants that may have incidental food contact. ISO 21469 goes further by covering hygiene requirements for the lubricant’s formulation, production and packaging.
Having NSF H1 registration does not automatically mean the manufacturer or production site is ISO 21469 certified. ISO 21469 is not usually a baseline requirement in food safety schemes such as BRCGS or IFS Food, but some retailers, customers or supplier approval programmes may require it. Check your audit standard, customer specifications and retailer codes to know whether it applies.
An approved application point in the lubricant register is a specific lubrication point on a specific asset where a lubricant has been assessed and approved for use. This assessment should consider the machine, contact zone and lubrication method.
A lubricant register that only lists product names is usually not enough for audit-ready control. The register should show which approved lubricant is assigned to which asset and application point. Having the right lubricant in stock is not the same as having it approved for the right machine.
