Hydrophobic Membranes

(Venting)

Millipore offers both hydrophilized and naturally-hydrophobic membranes for a variety of applications.

Typical Applications

Bag and tubing vents
Vial vents
Pump vents
IV vents

Transducer protection
Vent caps
Insufflation
Gas anesthesia monitoring

Need help determining which membrane you need?
Download our Microfiltration Membranes product guide.

Fluoropore (PTFE) Membrane

Can be used in applications which require high chemical and temperature resistance. Good air flow. Seals well to most plastics.

Material	PTFE with PET or PP backing
Pore Size ( µm ) Backing	0.2/PP	0.2/PET	1.0/PP	1.0/PET
Thickness (mils)	7-15	4-9	7-15	2.5-8
Max. Operating Temp (C)	150	177	150	177
Tensile Strength (lbs)	62	14	62	14
ETO Compatibility	Yes	Yes	Yes	Yes
Water breakthrough (psi)	50	50	10	10
Airflow rate (sipm/cm² at 10 psi)	4.8	4.8	8.8	39.5
Minimum Bubble Point	15	15	6	6

SureVent PVDF Membrane

This super-hydrophobic PVDF membrane repels most liquids, including alcohol, protein, lipid, and other solutions with low surface tensions. You'll find it in our Dualex transducer protectors and IV Express filter units.

Pore Size ( µm )	0.1	0.22	0.45	0.65	1	2.0-5.0***
Thickness ( µm )	80-140	100-150	90-140-	90-140	90-140	90-175
Max. Operating Temp. (C)**	126	126	126	126	126	126
Tensile Strength (libs/in)	>2.7	>2.7	>2.7	>2.7	>1.7
Gamma Compatibility	Yes	Yes	Yes	Yes	Yes	Yes
Water breakthrough	73	45	25	15	7	2
Airflow rate (slpm/cm2 at 10 psi)	>1	>1	>1	>4.5	>12.8	>13

** Use at temperatures below 80 degrees C for aromatic Hydrocarbons.
** Nominal Size

SureVent UPE Membrane

This naturally hydrophobic membrane is an excellent value for basic venting and gas filtration applications. It has excellent airflow and it seals well to most plastics.

	SureVent UPE Membrane						SureVent UPE Membrane
Material	Ultra-high molecular-wieght (standard)						Ultra-high molecular-weight (thin)
Pore Size ( µm )	0.05	0.1	0.2	0.45	0.65	1	0.05	0.1	0.2
Thickness ( µm )	60-75	60-90	80-110	128-168	90-130	80-120	35-55	45-75	35-55
Max. Operating Temp. (C)	80	80	80	80	80	80	80	80	80
Tensile Strength (libs/in) *	3.8	3.3	2.9	3.4	2.6	2	1.7	3.5	1.4
Gamma Compatibility	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Airflow rate (slpm/cm2 at 10 psi)	1.1	1.4	2.7	4.5	13.9		3.5	5	8.9
Minimum Bubble Point **	50	36	34	15	73	3	50	36	24

*Tensile strength for UPE is cross-web.
** Wet with IPA