Sharp · Refrigerator Filters
SJF2955KS Refrigerator Water Filter By Puritas
Lower PFAS concern for typical carbon filter. No brand disclosure available.
Refrigerator water filters using activated carbon typically do not contain PFAS. Puritas makes no public PFAS claims, but carbon media itself is inherently lower risk material.
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Carbon/activated carbon filter media
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
The SJF2955KS uses activated carbon as its primary filtration medium, a well-established material for removing chlorine, odor, and some organic compounds from drinking water. Activated carbon is thermally stable and does not leach harmful substances into water at refrigerator temperatures (typically 35-40°F). This material class has decades of safe use history in residential water filters and requires no special handling during normal operation.
The brand's record and disclosure
Sharp has not published detailed safety disclosures or third-party certifications specific to this filter model on public record. No recalls or safety complaints for the SJF2955KS were identified in available regulatory databases. The brand's broader water-filter product line lacks transparency statements about manufacturing standards or contaminant testing protocols, though this is common in the OEM refrigerator-filter segment. Purchasers should rely on standard usage guidelines rather than brand-level transparency.
How it compares in its category
Refrigerator carbon filters like this one occupy the lower tier of water treatment in terms of contaminant removal breadth compared to under-sink or whole-house systems, but they adequately address chlorine and taste/odor in most municipal water supplies. Activated carbon cartridges are the industry standard for this application and generally perform comparably across brands when replaced on schedule. This product offers no documented advantage or disadvantage versus competing OEM filters in safety profile.
If you buy it
Replace the filter every 6 months or after 300 gallons of use, whichever comes first, to prevent bacterial colonization in spent carbon and maintain effectiveness. Store unused filters in a cool, dry place and do not expose to direct sunlight or heat sources. Flush the system for 15-20 seconds before first use to remove loose carbon particles. Do not attempt to wash or reactivate the cartridge; replacement is the only valid maintenance step.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Bacterial growth in unmaintained filter
Activated carbon filters can support microbial growth if cartridges are not replaced on the manufacturer's schedule. Sharp provides standard replacement intervals (6 months), but user non-compliance is the primary driver of risk, not the product itself.
Housing/connection material leachables
No public safety alerts or lab testing results document leaching from the plastic or metal housing of this specific model. Standard refrigerator filter housings use food-contact-safe polymers, though the brand does not disclose material specifications.
Loose activated carbon particles in water
New or poorly flushed carbon cartridges can release fine black particles into water, which are harmless but cosmetically undesirable. This is prevented by flushing per instructions before first use.
Over-filtration or mineral depletion
Activated carbon filters remove chlorine and some organics but do not demineralize water. No documented health risk from this filter's performance profile is on record.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 68% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Refrigerator Filters
Kenmore
9690 Refrigerator Water Filter 1-Pack, Nsf/wqa/iapmo Certified, Reduces 99% Chlorine & Odor, BPA-Free, Replacement for 46-9690 469690 Lt700p
activated carbon filter cartridge
Lower-concern water filter; carbon-based design unlikely to contain PFAS, but Kenmore makes no explicit PFAS disclosure.
✓Verified PFAS-free by a third party
Kenmore
Pureline Filter Compatible with Whirlpool Everydrop Filter 1
Activated carbon and fiberglass filter media
Lower concern for PFAS; standard cartridge filter with no known PFAS-bearing materials, but brand offers no transparency.
✓Bare metal or glass, no coating at all
Clearly Filtered
Water Pitcher Replacement Filter 3-Pack
Activated carbon and ion-exchange resin filter media
Lower-concern option; activated carbon filters are standard PFAS-reduction media, but verify pitcher durability and actual tested removal rates independently.
✓Brand claims PFAS-free (unverified)
More refrigerator filters 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.