Guide Series Waterproof Case vs K470 Aluminum Storage Case 40845: which is safer?

zarges K470 Aluminum Storage Case 40845 is the clear pick. Plano Guide Series Waterproof Case carries a failing PFAS grade, and we never recommend buying a failing product.

Plano

Guide Series Waterproof Case

PFAS grade

F 40/100

Overall grade

F 6/100

Verdict

Skip

Hazard flags

⚑ 5

Material

Hard plastic shell, waterproof seal/lining (unspecified)

Confidence

35%

LikelyPFAS in water-repellent coating (separate grade provided)

PossiblePlastic leaching from unspecified shell and lining

PossibleSeal degradation and contamination migration

Why this grade

Our pick

Zarges

K470 Aluminum Storage Case 40845

PFAS grade

B 85/100

Overall grade

C 77/100

Verdict

Buy

Hazard flags

⚑ 2

Material

Aluminum with rubber gasket/hinges

Confidence

78%

PossibleAluminum corrosion and leaching

PossibleBacterial or mold growth in seal

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 →

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