PCTE Membrane Filters, 8.0 Micron Sheets, PVP-Free, 25mm x 80mm

Code: PCTF80258050-50

Variation ID		Product Code	Pack Size	List Price	Qty
24392	photo_camera	PCTF80258050-50	50 Pack PCTF80258050-50	£119.45

Pack: 50 Pack

£119.45

Hydrophobic Polycarbonate (PCTE) Membrane Filters, 8.0 Micron, 25mm x 80mm

Sterlitech’s hydrophobic polycarbonate track-etch (PCTE) membrane filters offer exceptional particle retention, low non-specific binding, and minimal extractables, making them ideal for venting, chemotaxis studies, and small-particle analysis. Manufactured from a single microporous polycarbonate film, these membranes feature a smooth, translucent surface and precisely defined cylindrical pores for reliable performance in dry or non-aqueous environments.

These PVP-free filters are produced through a two-step, quality-controlled process that ensures uniform pore size distribution, high dimensional stability, and excellent visual clarity—perfect for microscopy-based workflows. The membranes are designed to repel water, with a contact angle between 78° and 88°, and are recommended for applications where wettability is not required.

Key Features

Hydrophobic, PVP-free surface for dry or non-aqueous applications
Low non-specific binding and negligible adsorption
Flat, smooth structure for clear microscopic observation
Absolutely-rated cylindrical pores with tight size distribution
Minimal extractables; no particle shedding or sloughing

Ideal for Venting, Dry Filtration, and Particle Analysis

Sterlitech’s hydrophobic PCTE membranes are particularly well-suited to air and gas venting, SEM and optical particle analysis, gravimetric filtration, and chemotaxis studies. Their hydrophobic nature makes them unsuitable for aqueous samples, but ideal for use with low-surface-tension fluids, dry particulates, or where sample clarity and membrane integrity are critical.

For aqueous or alcoholic filtration needs, a hydrophilic PVP-treated version is also available, optimised for improved wettability and sample compatibility.

Precisely controlled cylindrical pores for maximum absolute particulate capture
Transparent, smooth flat surface for microscopic work
Lowest, non-specific binding membrane
Narrow pore size distribution
No sloughing or particle shedding, one integral plastic film
Negligible adsorption or absorption
Low extractables

General

Manufacturer: Sterlitech

Pore Size: 8.0

Diameter (mm): 25 x 80

USP Class VI Testing	Passed
BSA Protein Binding	~5 μg/cm²
Sterilization	Gamma Irradiation, EtO
Max. Operating Temp	140 °C (284 °F)
Sealing Compatibility	Ultrasonic, Heat, Radio Frequency, and Insert Molding
pH Range	4-8
Burst Strength	0.7 bar (10 psi)

Performance by Pore Size^a

	Pore Density^b (pores/cm²)	Open Area (%)	Nom. Weight (mg/cm²)	Nom. Thickness^c (µm)	Bubble Point^d (psi)	Water Flow Rate^e (mL/min/cm²)	Air Flow Rate^f (L/min/cm²)
0.1 µm	4 x 108	3.1	0.7	6	30	2.5	1.5
0.2 µm	3 x 108	9.4	1.1	10	20	10	3
0.4 µm	1 x 108	12.6	1.0	10	12	33	7.5
1.0 µm	2 x 107	15.7	1.1	11	6	130	20
3.0 µm	2 x 106	14.1	0.9	9	2	440	37.5
5.0 µm	4 x 105	7.9	1.1	10	1.2	700	30
8.0 µm	1 x 105	5.0	0.8	7	0.7	1000	30
10.0 µm	1 x 105	7.9	1.1	10	0.5	1150	34.5

*Notes:
a. Tolerance + 0%, -20%
b. Tolerance +/-15%
c. Tolerance +/-10%
d. Measured using isopropanol (IPA)
e. Initial flow rates using prefiltered water at 10 psi (0.7 kg/cm²)
f. Initial flow rates using prefiltered air at 10 psi (0.7 kg/cm²) for pore sizes <= 2 µm and 5 psi (0.35 kg/cm²) for pore sizes >= 3 µm