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We can only ship non-hazardous products to Rest of World
Compare all Pack Sizes
Unfortunately, we are not currently accepting orders for Northern Ireland, Jersey and Guernsey.
We can only ship to the following postcodes where a Royal Mail postal option has been chosen at checkout.
AB, DD, DG3, DG4, DG6 - DG9, EH, FK, G, HS, IM, IV, KA, KW, KY, ML, PA, PH, PO30 - PO41, TD, TR21 - TR25, ZE
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.
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.
General
| 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) |
| Pore Densityb (pores/cm2) | Open Area (%) | Nom. Weight (mg/cm2) | Nom. Thicknessc (µm) | Bubble Pointd (psi) | Water Flow Ratee (mL/min/cm2) | Air Flow Ratef (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
Pack Size:
Price: £
Quantity:
| Code | Pack | Price | Qty | |||
|---|---|---|---|---|---|---|
| PCTF0225100-100 | 25mm x 100 Pack | £186.95 | | |||
| PCTF0247100-100 | 47mm x 100 Pack | £273.95 | | |||
| PCTF029030-30 | 90mm x 30 Pack | £182.95 | | |||
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