Hydrophilic PTFE membranes filter with special treatment Excellent resistance to organic, acid and alkali solvents As hydrophilic PTFE type turns transparent when wet, microscopy is easy. Due to low protein adhesion, it is optimal for biological experiments. Suitable for pre-filtration of mixed solvents used in HPLC Two types in pore size : 0.2μm and 0.45μm, Filter size : 13mm and 25mm