
The water in my house comes from a well. Fine sludge is always present in the water flow. I used an AP110 filter to remove silt. KAROFI Whole House Water Filter Replacement Cartridge is a reasonable replacement for AP110. Both filters are 5 microns in size. I compared the flow rates for the two filter types and calculated the time to fill a two liter container. The AP110 was about four percent faster, meaning the AP110's flow rate was faster. I attribute this to the deep grooves in the AP110, which effectively double the surface area. I've come to the conclusion that the Karofi filter isn't that good, but is a reasonable replacement.

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

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 Air Drying System With Double Filters And Pressure Regulator Combo For Clean And Controlled Air Supply
18 Review