
This is not a quantitative filter paper. According to the GE Lifesciences website (maker of Whatman filter paper), grade 598 filter paper is a quality filter paper. I have used them to filter functionalized silica with particle sizes from 60 to 250 µm and they have worked great. A pore size of 8-10 µm was excellent for our use. Lost a star due to false claim about quantitatively sorted filter paper.

🔬 Lab Supply Filtration Membrane Solutions: Enhanced Diameter for Optimum Performance
4 Review

🔬 Sterile Hydrophilic Membrane Filter: Optimal Diameter for Enhanced Filtration Efficiency
4 Review

Diameter Lab Supply by Membrane Solutions
5 Review

Whatman 1005 090 Qualitative Circles Diameter
4 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 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 Air Drying System With Double Filters And Pressure Regulator Combo For Clean And Controlled Air Supply
18 Review

Filter under the sink Aquaphor Favorit ECO silver
20 Review