Polyvinylidene fluoride (PVDF) is a material which demonstrates a high particle retention efficiency, excellent chemical compatibility, good mechanical strength, high thermal resistance and low nonspecific adsorption of proteins.
Hydrophobic nature is only advisable for the filtration of aqueous samples if wetted with isopropanol or another alcohol.
All these features make it very versatile and membrane used.
Supplied in pores of 0.22 and 0.45 microns, and 25 in diameter and 47 mm in diameter.

Bubble point with alcohol (minimum value)
0.22 µm 1.0 bar | 100 Kpa
0.45µm 0.4 bar | 40 Kpa
Flow rate with alcohol (s/100 ml H2O/9.62 cm2 to 24 inks Hg):
0.22 µm ≤ 10 - 15
0.45 µm ≤ 37 - 60
Permeability to air (m3/m2/24 hours) ∆p= 0.01 Mpa
0.22 µm 2.06
0.45 µm 4.02
Thickness: 0.120 – 0.200 mm
Membrane material
Polyvinylidene fluoride (PVDF)
Diameter: 25 and 47 mm.
Pores: 0.22 and 0.45 µm
Maximum temperature of use ≤ 170ºC
Maximum pressure: 8.7 psi
Extractables with water: Very low
Chemical compatibility: 1– 14 pH
Reaction to water: hydrophobic
Sterilizations: Autoclaving to 121ºC, g radiation