The main property of these filters is their hydrophobic nature, this nature does not permit the filtration of aqueous samples, nevertheless this is ideal in the filtration of gases and venting works. Likewise, the polytetrafluoroethylene (PTFE) is an extraordinary resistant material against all the solvents and existent acids except the phosphoric acid.
They are available in a non-sterile format and in 4, 13, 25 and 30mm of diameter.
Bubble point with alcohol (minimum value)
0.22 µm 1.0 bar | 100 Kpa
0.45 µm 0.5 bar | 50 Kpa
5.0 µm - bar | Kpa
Flow rate with alcohol (ml/min /cm2 )p=0.7 bar | 70 Kpa aprox.:
0.22 µm 8 ml/min/cm2
0.45 µm 12 ml/min/cm2
5.0 µm 195 ml/min/cm2
Thickness: 0.190 – 0.250 mm
Materials
Membrane: Polytetrafluoroethylene (PTFE)
Housing: Polypropylene (PP)
Diameters: 4, 13, 25, 30 mm.
Filtration area
4 mm diámetro: 0.125 cm2
13 mm diámetro: 0.92 cm2
25 mm diámetro: 2.98 cm2
30 mm diámetro: 4.90 cm2
Maximum temperature of use ≤ 130ºC
Maximum pressure of work: 8.7 psi
Connectors
Inlet: Female luer lock
Outlet: Male luer slip
Hold-up volume
4 mm diámetro: < 5 µl
13 mm diámetro: < 10 µl
25 mm diámetro: < 30 µl
30 mm diámetro: < 55 µl
Extractables with water < 0.2%
Chemical compatibility: 1 – 14 pH
Reaction to water: hydrophobic
Sterilization: By g radiation, ethylene oxide or autoclaving at 121ºC.
