I bought these for survival/bug control as they seem to have the smallest footprint and weight on the filter straw market. I was dismayed to find the plastic filter cap and about 1/4 inch of carbon chipped in the pocket on one of the filters. Upon opening the package for further inspection, the entire carbon element fell out of the case. There is no way to fix this. The other filter was ok. This is definitely not a product I would trust as an emergency bag of any kind, at least not something you would go hiking with. That's a shame as I really wanted to like them given the niche they fill as a portable/compact water purification solution. The search for the perfect straw continues.
NANPU 1 FRL Air Filter Regulator Lubricator Combo With 0-150 Psi Gauge, 5 Micron Brass Element, Poly Bowl & Semi-Auto Drain - Metal Bracket Included
20 Review
NANPU Compressed Air Filter Regulator Combo: Brass Element, Semi-Auto Drain, 0-150 Psi Gauge, And More
21 Review
NANPU Air Drying System With Double Filters And Pressure Regulator Combo For Clean And Controlled Air Supply
18 Review
NANPU DFR-02 1/4" NPT Air Drying System - Double Air Filters, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl
20 Review