Berkley · Fishing Line & Fishing Tackle
Berkley Trilene Big Game Mono Leader Coil
Fishing monofilament lower concern; nylon typically PFAS-free unless coated.
Berkley Trilene Big Game is standard monofilament nylon fishing line. No Teflon-family coating coatings or water-repellent treatments typical for this product category, though Berkley discloses nothing about PFAS.
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Monofilament nylon 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
Berkley Trilene Big Game Mono is extruded nylon monofilament, a single-strand polymer without coating or layering. Nylon as a base resin is chemically stable and does not leach monomers into water under normal conditions. The material is not heated during use and presents minimal chemical release risk in its intended application as a fishing leader.
The brand's record and disclosure
Berkley (owned by Pure Fishing) does not publicly disclose PFAS testing or formulation details for monofilament products. The brand has no documented recalls or safety controversies specific to monofilament lines. No independent testing of this product line for heavy metals, colorants, or additives appears on public record.
How it compares in its category
Monofilament leaders are lower-risk fishing tackle compared to fluorocarbon lines (which sometimes contain or are coated with fluorinated compounds) or braided lines with unknown resin binders. Nylon monofilament is a conventional, mature material class with no category-wide safety scandals. Performance differences among brands relate to strength and visibility, not safety.
If you buy it
Inspect the line regularly for UV degradation and brittleness, particularly if stored in direct sunlight; replace if fraying or strength loss is visible. Nylon is safe for fresh and saltwater use without special handling. Dispose of spent line responsibly in trash (not water); monofilament does not biodegrade and poses entanglement risk to wildlife.
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.”
PFAS in nylon resin or coatings
Nylon monofilament is typically PFAS-free, but fluorinated additives for water repellency or slip are not ruled out. Berkley provides no formulation disclosure; status remains unverified.
Heavy metal contaminants in pigment or stabilizers
No public testing or recalls document lead, cadmium, or antimony in monofilament. Risk is low for a simple polymer resin with minimal additives.
Leaching into water during use
Nylon monofilament is chemically inert in water at ambient temperature. No monomers or plasticizers are known to leach under normal fishing conditions.
Microplastic shedding or fragmentation
Over time, UV exposure and mechanical stress cause nylon lines to degrade and shed microplastics into water. This is an inherent material-class concern, not brand-specific.
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.