
I only opened one of the filters and the whole bottom was scratched and dirty. I'm not sure if the carbon made it look "dirty". However, it seemed brand new as it released carbon when it first used water filtration. But next time I'll buy somewhere else. Edit: I opened the second filter and it's in much better shape. Perhaps the first was the only one who deserted.

Filter under the sink Aquaphor Favorit ECO silver
20 Review

NANPU DFR-02 1/4" NPT Air Drying System - Double Air Filters, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl
20 Review

π§ NANPU 1/2" NPT Compressed Air Filter Regulator Combo Piggyback with Auto Drain, 5 Micron Brass Element, Poly Bowl, Metal Bracket, and 0-150 psi Gauge
18 Review

NANPU Compressed Air Filter Regulator Combo: Brass Element, Semi-Auto Drain, 0-150 Psi Gauge, And More
21 Review