PTFE membrane is perfect for the filtration of gaseous or organic solvent-based samples and highly corrosive substances. The hydrophobic PTFE membrane provides chemical resistance to aggressive media and excellent temperature stability allowing an extended sampling range.
If used with aqueous samples, the membrane usually requires pre-wetting (normally by using a small amount of alcohol) but other membranes such as nylon have a better performance for these samples and are easier to use.
PTFE syringe filters can also be used to prevent moisture passing through air vents.
