1)Excellent pH and chemical stability, the membranes are stable in weak acids and bases 2)Great compatibility with many salts –CaCl2 , (NH4 )2 SO4 , etc. 3)Excellent compatibility with most aqueous organic solvents, such as alcohols and ketones 4)Excellent temperature resistanceSensitive to microbial activity when humidified, however, growth of cellulolytic micro-organisms can be prevented by keeping the membrane in water containing benzoate, benzoic acid, or other preservatives 5)Very low protein absorption 6)Available in widths ranging from 10mm to 172mm and in rolls lengths of 100 or 500 feet 7)Contains low levels of contaminants, some membranes contain glycerin as a humectant, contaminants may be removed by boiling prior to use
