For simple and cheap filter paper they work well. Not sure what pore size they are but for now they suit me. Minor tears or perforations from pressure (mostly my fault).
Diameter Lab Supply by Membrane Solutions
5 Review
π¬ Lab Supply Filtration Membrane Solutions: Enhanced Diameter for Optimum Performance
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π¬ Sterile Hydrophilic Membrane Filter: Optimal Diameter for Enhanced Filtration Efficiency
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Whatman 1005 090 Qualitative Circles Diameter
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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
Filter under the sink Aquaphor Favorit ECO silver
20 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