B+W · Waterproof Camera & Lens Protection Cases
B+W XS-Pro Clear MRC-Nano 007 Filter
Camera filter coating composition unclear; no PFAS disclosure available.
B+W filters use proprietary MRC-nano coatings for water and dust repellency, but the brand discloses nothing about PFAS status. Coating chemistry remains unconfirmed from public sources.
The better-graded swap
Tiffen
Tiffen Photo Twin Pack
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 MRC-nano multi-resistant coating
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.
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
Coating degradation and inhalation risk
If the MRC-nano coating flakes or degrades over extended use, microscopic particles could become airborne during cleaning or handling. No public data exists on particle size or toxicity; risk is highly dependent on actual coating adhesion and composition, which is undisclosed.
Unidentified coating additives
Multi-layer anti-reflective coatings often contain metallic oxides, silicon-based compounds, or fluorine-based additives to achieve optical properties. B+W has not disclosed whether MRC-nano uses fluorochemicals, heavy metals, or other substances of concern; this ambiguity prevents full hazard assessment.
What’s reassuring
Glass integrity under impact
Borosilicate optical glass is durable and shatter-resistant under normal photography use. No established safety concern with the glass substrate itself in this application.
Skin contact allergies or irritation
Optical filters are handled briefly and do not contact skin during normal camera operation. No allergens or irritants have been reported for B+W filters in product reviews or safety databases.
Leaching into moisture
Borosilicate glass is chemically inert to water and dilute solutions. The coating is not food-contact and sits in air during use, so leaching into consumables is not a practical concern.
The full breakdown
What it's made of and why it matters
The B+W XS-Pro Clear is built from optical-grade borosilicate glass, a chemically stable material with high resistance to leaching and thermal shock. The MRC-nano coating is a multi-resistant anti-reflective layer designed to reduce glare and improve light transmission; B+W does not publicly disclose the specific chemical composition of this proprietary coating. Since the filter sits between a camera lens and sensor with no direct contact with food, skin, or inhalable particles during normal use, the coating chemistry poses minimal practical exposure risk.
The brand's record and disclosure
B+W (Schneider Optics) is a German manufacturer with a long history in optical coatings and has not published transparency statements regarding PFAS, heavy metals, or VOC content in filter coatings. The brand maintains ISO 9001 quality certification and does not carry known public recalls or safety violations specific to this product line. However, the company's silence on coating composition leaves questions about whether fluorochemicals or other industrial additives are present in the MRC-nano layer.
How it compares in its category
Optical filters are a niche product category; most alternatives (Hoya, Marumi, Tiffen) similarly withhold detailed coating chemistry from public disclosure. Unlike cookware or food-contact plastics, camera filters face minimal regulatory pressure around chemical transparency. B+W's MRC-nano coatings are considered industry-standard in durability and optical performance, with no evidence of alternative products using demonstrably lower-concern coating technologies.
If you buy it
Filters require no special handling during use; store dry and avoid prolonged contact with skin oils or moisture that could degrade the coating over years. Do not expose to solvents or abrasive cleaning; use only microfiber cloths and lens-grade cleaning solutions. Replacement is typically triggered by visible coating scratches or optical degradation, not age. If you work in a profession with repeated chemical exposure (laboratories, industrial settings), glove use during handling is sensible practice.
What we don’t know
- Basis
- Model estimate, 55% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- B+W 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.