He is exchanging rate of flow for quality/sterility, way to goPES membrane is for sure NOT good resistant to BB,BA,EO . Nylon and PTFE are resistant to all solvents.
Flow depends on
- viscosity of carrier
- temperature of carrier
- vacuum power ( or press )
- type of membrane
ALCOHOLS PES membrane
Benzyl Alcohol, 100% NR - no resist.
Benzyl Alcohol, 3% LR - limited resist.
