My OEM Rainsoft filters gave me 6ppm after flushing. time to replace. I ordered these filters, installed them and got 145ppm after several washes. The plastic on the filter is torn, I thought the problem was there. Gave them back for new ones. Installed, got 96 PPM after a few washes. Went back to the OEM filters and tested them at 25ppm (membrane filters had to be replaced) which stinks because they're $100. I think not all filters are created equal.
NANPU DFR-02 1/4" NPT Air Drying System - Double Air Filters, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl
20 Review
Filter under the sink Aquaphor Favorit ECO silver
20 Review
NANPU 1/2" NPT Air Drying System - 5 Micron Particulate Filter, 0.01 Micron Coalescing Filter, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl W/Metal Gauge
23 Review
NANPU Compressed Air Filter Regulator Combo: Brass Element, Semi-Auto Drain, 0-150 Psi Gauge, And More
21 Review