Membrane Filter Cellulose Mixed Esters white grided. This membrane filter products include a variety of membrane material of choice for mikrofiltrasi with a pore size of 0.1 pM to 8 pm and for ultrafiltrasi molecular weight cut off from 300,000 to 1000 Dalton. A common application for the retention of the cell membrane filters, collections of particles, clarification and sterile filtration of aqueous particulate analysis, analysis, microbiology and epifluorescence microscopy