Trilene XL vs UltraCast Ultimate Mono Fishing Line: which is safer?

SpiderWire UltraCast Ultimate Mono Fishing Line is our pick: better on PFAS and on the overall hazard picture.

Berkley

Trilene XL

PFAS grade

B 85/100

Overall grade

F 61/100

Verdict

Buy

Hazard flags

⚑ 3

Material

Nylon monofilament fishing line

Confidence

72%

ReportedUV and thermal degradation of nylon

PossibleUnknown additives (slip agents, UV stabilizers, colorants)

ReportedMicroplastic generation via fragmentation

Why this gradeBuy

Our pick

Spiderwire

UltraCast Ultimate Mono Fishing Line

PFAS grade

B 85/100

Overall grade

C 77/100

Verdict

Buy

Hazard flags

⚑ 2

Material

Monofilament nylon fishing line

Confidence

72%

PossiblePFAS in monofilament nylon

PossibleAdditives (UV stabilizers, processing aids)

Why this gradeBuy

Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →

More fishing line & fishing tackle: see the full ranking