Promaster · Waterproof Camera & Lens Protection Cases
Promaster Pure Light Protection Filter
Unknown coatings. Brand says nothing about PFAS.
Promaster filters combine optical glass with multi-element coatings kept private. Some optical coatings use Teflon-family coating, but you get no brand transparency.
The better-graded swap
Aquatech
AQUATECH Water Housing Cover
85/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Optical glass with protective coatings
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Promaster Pure Light Protection Filter is made of, ingredients and materials
The Promaster Pure Light Protection Filter is constructed from optical-grade glass with multi-coated surface treatments designed to reduce reflections and UV transmission. The coatings are the primary concern in optical filters, as they can contain heavy metals (antimony, cerium, titanium oxides) or fluorinated compounds to achieve refractive index matching. Because this is a non-consumable product that does not contact skin, food, or water directly, ingestion or leaching pathways are not relevant; the main risk would be dust inhalation during grinding or breakage, which is not a normal use scenario.
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.
Unknown / proprietary coating
A coating is recorded with no disclosed chemistry.
Lead
Optical filters typically use metallic oxides in multilayer coatings to control refractive index. 3M does not publicly disclose coating composition for camera filters, so heavy metal presence cannot be ruled out, though inhalation risk is negligible during normal use.
Source, ATSDR ↗Glass dust from breakage
If dropped and shattered, the filter will produce fine glass particles. Inhalation of these particles poses a minor respiratory hazard if not promptly cleaned up, though actual risk is low in typical domestic use.
Fluorinated compounds in coatings (Teflon-family coating, Teflon-type coating analogues)
Some optical manufacturers use fluorinated coatings to improve durability and anti-reflective properties. 3M's silence on coating materials and the company's known PFAS history create uncertainty, though no specific PFAS contamination has been documented in this product.
What’s reassuring
Degradation of coatings over time
High-quality optical coatings are durable and do not typically degrade or leach during normal storage or use. No reports of coating failure or hazardous off-gassing from Promaster filters exist in public records.
How is this PFAS grade calculated?
The brand's record and disclosure
3M has faced substantial litigation and regulatory scrutiny over PFAS contamination in water, textiles, and adhesives, but has not publicly disclosed specific PFAS content in optical coatings. The company maintains no published standard for optical filter coating composition or heavy metal limits beyond ISO/IEC optical specifications. No product-specific safety incidents or recalls for this filter model are on record as of available sources.
How it compares in its category
Camera lens protection filters are a low-hazard product category because they remain outside the body and do not degrade under normal use. Promaster filters are mid-range offerings; premium brands (Hoya, B+W) and budget alternatives (generic uncoated glass) vary mainly in coating durability and anti-reflective performance rather than toxicological profile. All optical filters carry identical inherent risks, breakage and inhalation of glass dust, and unknown coating chemistry not typically disclosed by any manufacturer.
If you buy it
Handle with care to avoid drops or impacts that could shatter the glass. Store in a protective pouch or case to prevent accidental breakage and inhalation of dust. Clean only with microfiber cloths or lens cleaning solutions; do not use abrasive materials. Replace if the glass cracks or if coatings show visible wear (clouding, peeling), though this is rare under normal use.
What is not known about PFAS in this product?
- Basis
- Model estimate, 55% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Promaster has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Promaster Pure Light Protection Filter?
- Optical glass lens with multi-coated optical surfaces
- We found no PFAS statement from the brand
- No PFAS statement found from the brand
- Glass lens (borosilicate or soda-lime glass)
- Optical coating degradation
2 hazards checked on this product, all on its full breakdown.
- Optical glass, aluminum frame, non-coated optical surfaces
- We found no PFAS statement from the brand
- Optical glass fragility and sharp edges
More waterproof camera & lens protection cases grades
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.