
These filters came in sealed packages but were not new filters. The first one I installed and didn't check, but after a few months I checked and replaced it. Everything seemed fine so I installed a second one and used it for several months and then tested and installed a third filter. This one I tested showed that it was higher than tap water before filtering. tester broken? No, I bought a saline sample and calibrated the tester, it was a little off. I opened up and tested the last of the 4 and it was also over 350 vs 260 from the tap. I recently bought a new Zero water carafe that comes with a filter. The water from this filter comes out 000 perfectly. Bottom Line: Somewhere in the chain, filters sent for recycling are repackaged and sold as new. Recommendation: Check your filters immediately and return them if they are bad.

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 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

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 3/8" NPT Compressed Air Filter Regulator Combo Piggyback, 5 Micron Brass Element, Poly Bowl, Semi-Auto Drain, Metal Bracket, 0-150 Psi Gauge
26 Review