Monofilament vs Mastiff FC Fluorocarbon Line: which is safer?
Ande Monofilament is the clear pick. Shimano Mastiff FC Fluorocarbon Line carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Ande
Monofilament
PFAS grade
Excellent 85/100
Overall grade
Excellent 81/100
Verdict
Buy
Hazard flags
⚑ 1
Material
Monofilament nylon fishing line
Confidence
72%
PossibleMicroplastic shedding during use
Shimano
Mastiff FC Fluorocarbon Line
PFAS grade
Poor 30/100
Overall grade
Bad 0/100
Verdict
Skip
Hazard flags
⚑ 4
Material
Fluorocarbon fishing line (PVDF or similar polyvinylidene fluoride)
Confidence
72%
LikelyPFAS inherent to material structure
PossibleMicroplastic shedding from line degradation
ReportedEnvironmental persistence and bioaccumulation
Where these two actually differ
- We flag Microplastic shedding during use on the Ande and not on the Shimano.
- We flag PFAS inherent to material structure, Microplastic shedding from line degradation, Environmental persistence and bioaccumulation and Coating embrittlement and loss of integrity on the Shimano and not on the Ande.
- The Ande is Monofilament nylon fishing line where the Shimano is Fluorocarbon fishing line (PVDF or similar polyvinylidene fluoride), which is most of the difference in these two grades.
- The gap is 55 points, wide enough that this is not a close call, and the Ande is the one to buy.
Both products run through the same public rubric, which covers 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, see the full ranking