(2 pack) Stren Original Monofilament Fishing Line, Clear/Blue Fluorescent, 12 lb Test Strength, 300 yd
Lower concern. Nylon monofilament is not a material linked to PFAS.
Stren Original is nylon monofilament fishing line with no water-repellent finish on record. The brand has no PFAS statement on record. Nylon monofilament as a base material is not linked to PFAS.
We flunk more products than we pass. This one earned its grade. How we grade
Material
nylon monofilament fishing line
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.
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.
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.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
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.
Heavy metals
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.
Source, FDA ↗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 not a material linked to PFAS 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.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Stren has made none
Formulations change between production runs, so check the current label. How we grade.
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.