Cope-LLG Catalogue 2018

1450 14. Chromatography Sample preparation/Syringe filters GENERAL CATALOGUE EDITION 20 E & OE. Chemical compatibility of filter materials The following table lists the chemical compatibility of our CHROMAFIL ® materials. The chemical compatibility depends on several parameters such as time, pressure, temperature and concentration. In most cases, CHROMAFIL ® filters will have only short contact with a solvent. In these cases they may be used despite of limited compatibility. For example, a PTFE filter with PP housing does not liberate any UV-detectable substances during filtration of 5 ml THF, although PP shows only limited resistance towards THF. Solvent Material MV CA RC PA PTFE PVDF PES PET GF PP Acetaldehyde Acetic acid, 100 % Acetone Acetonitrile Ammonia, 25 % Benzene n –Butanol Cyclohexane Dichloromethane Diethyl ether Dimethylformamide 1,4–Dioxane Ethanol Ethyl acetate Ethylene glycol Formic acid, 100 % Hydrochloric acid, 30 % Methanol Nitric acid, 65 % Oxalic acid, 10 % aqueous Petroleum ether Phosphoric acid, 80 % Potassium hydroxide, 1 mol/l 2–Propanol Sodium hydroxide, 1 mol/l Tetrachloromethane Tetrahydrofuran Toluene Trichloroethene Trichloromethane Urea Water Xylene Data not guaranteed. resistant, not resistant, limited resistance MV = cellulose mixed esters, CA = cellulose acetate, RC = regenerated cellulose, PA = polyamide, PTFE = polytetrafluoroethylene (Teflon), PVDF = polyvinylidene difluoride, PES = polyethersulfone, PET = polyester, GF = glass fibre, PP = polypropylene (housing material)