Tiffen · Waterproof Camera & Lens Protection Cases
Tiffen Series 9 Linear Polarizing Filter
Lower PFAS concern, but brand discloses nothing about coating chemistry.
This polarizing filter uses glass optics with proprietary coatings. No public disclosure of coating composition or PFAS status exists; glass itself is not associated with PFAS but coatings remain unspecified.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Glass and optical coatings
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Optical coating composition and leaching
Multi-layer dielectric coatings on optical filters are inert under normal use; no documented cases of coating particles, heavy metals, or toxic compounds leaching or off-gassing from polarizing filters into air or skin.
Glass integrity and particle shedding
Optical-grade borosilicate glass is stable and does not shed microparticles or degrade under normal handling, storage, or moderate temperature changes typical of camera use.
Heavy metals
While some optical coatings historically used lead or other metals, modern polarizing filters rely on titanium dioxide, hafnium, and silica compounds; no specific evidence of heavy metal contaminants in Tiffen filters or comparable products.
Source, FDA ↗Off-gassing or volatile organic compounds
Optical filters do not off-gas under normal camera use or storage; coatings are cured and cross-linked during manufacturing and remain stable at ambient and moderate elevated temperatures.
The full breakdown
What it's made of and why it matters
The Tiffen Series 9 Linear Polarizing Filter is composed of optical-grade glass with anti-reflective and polarizing coatings applied to its surfaces. These coatings are typically multi-layer dielectric or polymer-based systems designed to reduce glare and enhance light transmission. Unlike cookware or food-contact products, this filter has no ingestion risk and minimal dermal contact, so coating leaching is not a consumer safety concern.
The brand's record and disclosure
Tiffen is a long-established optical filter manufacturer with no documented recalls, safety warnings, or public controversies related to filter coatings or materials. The brand does not publicly disclose detailed coating chemistry or PFAS use in optical products, which is typical for the optical industry but limits transparency. No third-party testing or certification (RoHS, REACH compliance documentation) is widely publicized for this specific product line.
How it compares in its category
Polarizing filters across manufacturers (B+W, Hoya, Nikon, Canon) use similar optical glass and coating strategies; Tiffen's approach is standard and carries no known safety disadvantage relative to competitors. This is a non-consumable, non-volatile product category with lower regulatory scrutiny than coatings in cookware or textiles. End-of-life disposal is low-risk; glass and coatings do not volatilize or leach into the environment under normal use.
If you buy it
Store the filter in a dry case to prevent moisture accumulation on coatings, which can degrade anti-reflective properties over years but poses no health risk. Clean the glass only with optical-grade lens cloths and distilled water; avoid harsh solvents that might strip coatings (though this is a performance, not safety, concern). Inspect the filter periodically for visible coating damage (peeling, discoloration); replace if severely damaged to maintain optical performance. No special handling, heating limits, or maintenance beyond basic dust and moisture management is required.
What we don’t know
- Basis
- Model estimate, 75% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Tiffen has made none
Formulations change between production runs, so check the current label. How we grade.
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How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.