Stren · Fishing Line & Fishing Tackle
(2 pack) Stren Original Monofilament Fishing Line, Clear/Blue Fluorescent, 12 lb Test Strength, 300 yd, Size: 12 lbs
Lower concern; nylon monofilament is inherently PFAS-free material.
Stren Original is standard nylon monofilament fishing line with no known PFAS-treatment or Teflon-family coating. No brand disclosure on PFAS, but material itself poses lower risk than treated products.
Shop Stren on Amazon →Material
nylon monofilament fishing line
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).
Category baseline
other is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
Stren Original is extruded nylon monofilament, a single continuous plastic fiber with no fabric weave or coating. Nylon (polyamide) is inherently PFAS-free and does not require fluorine-based water repellents or slip agents in its manufacture. The "Clear/Blue Fluorescent" designation refers to optical dyes added during extrusion to enhance visibility underwater; these do not introduce hazardous heavy metals in established monofilament production.
The brand's record and disclosure
Stren is a Rapala VMC subsidiary with no documented recalls, material disclosures, or public safety controversies related to monofilament products. The brand does not publish ingredient or chemical transparency reports specific to fishing line. No third-party certifications (e.g., ISO, eco-labels) are standard in the fishing line category, which reflects industry norms rather than a brand-specific gap.
How it compares in its category
Monofilament fishing line (nylon, fluorocarbon, or copolymer) is functionally uniform across brands in terms of material safety. Fluorocarbon alternatives carry similar hazard profiles. Braided lines (typically polyethylene) introduce no additional safety concerns but differ mechanically. Stren Original is a mainstream, mid-tier product with no documented safety distinction from competitors like Berkley or Shimano.
If you buy it
Store spools in cool, dry conditions away from direct UV to slow nylon brittleness over 2-3 years. Do not ingest or allow line fragments to contaminate food or drinking water. After use, dispose of spent line in household waste or through tackle shop recycling programs, not waterways, to reduce environmental persistence (nylon degrades slowly in marine environments). Wash hands after handling if irritation occurs, though allergic reactions to nylon monofilament are rare.
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.”
UV degradation and brittle fragment shedding
Nylon monofilament becomes brittle with UV exposure and age, potentially releasing small plastic particles during casting or retrieval. This is a material property of all nylon fishing lines, not a manufacturing defect or brand-specific issue.
Optical dye safety (colored/fluorescent variants)
The blue fluorescent dye used in this product is not disclosed, but standard monofilament colorants are azo or triphenylmethane dyes that are stable in cured nylon and not known to leach under typical fishing conditions. No documented incidents of dye migration or toxicity in monofilament products.
Entanglement and environmental persistence
Monofilament fishing line is a recognized ocean litter hazard, causing entanglement in wildlife and persisting in the environment for years. This is an end-of-life issue applicable to all nylon monofilament, not specific to Stren, and reflects product disposal rather than inherent toxicity.
Heavy metals in trace additives
No recalls or testing reports indicate lead, cadmium, or other heavy metals in Stren monofilament. Nylon extrusion typically does not require antimony or other catalytic metals as additives in the final product.
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.
More fishing line & fishing tackle 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.