Sufix · Fishing Line
Sufix ProMix Monofilament Fishing Line
Lower concern; standard monofilament fishing line has no typical PFAS trigger points, but no public testing confirms absence.
Sufix ProMix is a basic nylon monofilament fishing line with no known water-repellent or stain-resistant treatment that would require PFAS. The brand makes no PFAS claims and offers no third-party verification.
Shop Sufix on Amazon →Material
Nylon monofilament (standard polymer)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
other is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Sufix ProMix is a nylon monofilament polymer extruded into a single continuous filament. Nylon is a thermoplastic synthetic polymer that does not degrade, leach plasticizers, or release volatile compounds under typical fishing conditions (freshwater, saltwater, ambient temperatures). Unlike coated lines or braided composites, monofilament has no adhesives, dyes, or surface treatments that would introduce secondary chemical hazards. The material is chemically stable once cured during manufacturing.
The brand's record and disclosure
Sufix (owned by Rapala) publishes minimal safety or material composition data on consumer-facing channels. No safety certifications, third-party testing results, or hazard disclosures are publicly available for this product line. The brand has no documented recalls or public controversies tied to chemical content. This silence on disclosure is typical for the fishing-line category but leaves independent verification impossible.
How it compares in its category
Standard nylon monofilament lines (Sufix, Berkley, Trilene, etc.) are chemically equivalent and pose similar low-hazard profiles. Braided lines add adhesives and sometimes fluorocarbon coatings; monofilament avoids these. Fluorocarbon-coated alternatives introduce additional polymer layers and processing. Sufix ProMix sits in the baseline commodity segment with no material advantage or disadvantage relative to competitors.
If you buy it
Store the line in a cool, dry place away from direct sunlight to slow UV degradation over years, not chemical breakdown. Nylon has no heat-release concerns during normal casting or retrieve. Replace the line seasonally or after visible abrasion, kinks, or loss of strength. No special handling or exposure precautions are needed; standard fishing practice is sufficient.
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.”
Chemical leaching (plasticizers, residual monomers)
Nylon monofilament does not contain phthalates, BPA, or other plasticizers. Residual monomer content is minimal after curing and does not leach into water or food. No testing on this specific product is publicly available, but the material class poses no known leaching hazard.
Off-gassing or volatilization
Nylon monofilament does not release volatile organic compounds (VOCs) or formaldehyde during normal use. Heat release only occurs above 200C, well above any fishing-use scenario. No hazard identified for this product in standard conditions.
Microplastic shedding
Like all monofilament lines, Sufix ProMix may shed microscopic plastic particles through abrasion, UV degradation, and mechanical wear over months to years. This is an environmental concern (not a direct consumer safety hazard) common to all nylon fishing lines; no Sufix-specific data on shedding rate exists.
Heavy metals or pigment contaminants
Nylon monofilament does not require heavy-metal stabilizers or inorganic pigments for transparency or mechanical performance. No testing on this product is public, but the material class has no typical heavy-metal trigger points.
Degradation products (long-term UV or hydrolysis)
Over years of outdoor storage or exposure, nylon can hydrolyze and become brittle, but hydrolysis produces nylon oligomers, not toxic breakdown products. This is a durability concern, not an acute chemical safety risk. Replacement before brittleness prevents any secondary hazard.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% 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 Fishing Line
Stren
Original
Monofilament nylon fishing line
Lower PFAS concern for a fishing line product; no coating or treatment typical of PFAS carriers.
⚠Risky category by default
Maxima
Ultragreen One Shot
Lubricant/chain oil (mineral or synthetic base)
Lower PFAS concern for a chain lubricant; minimal Teflon-family coating/waterproofing risk profile.
⚠Risky category by default
Seaguar
Blue Label
Fluorocarbon fishing line (monofilament)
Fluorocarbon fishing line may contain PFAS; insufficient public data to grade definitively.
⚠Risky category by default
More fishing line 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.