COBETTER Hydrophobic GF Disc Membrane Filters 10/15 pcs/pk

In stock
Part No. MFGF-2225
Regular price $12.00 USD
Pore Size
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Materials Membrane Glass Microfiber (GF)
Wettability Hydrophobic
Color White
Physical Properties Filter Diameter 25mm/47mm/50mm/90mm/110mm
Pore Size 0.22μm/0.45μm/0.7μm/1.0μm/1.2μm
Maximum Operating Temp. 90°C
pH Range 2.0 – 11.0
Sterility Delivery Condition Nonsterile
Package Pack Size 15/pk, 10/pk



Pore Size Average Water Breakthrough (water 20°C) Air Flow Rate (@100ml*1in²*4.88in.water) Thickness (μm)
0.22 μm ≥15KPa ≤2s 360±50
0.45 μm ≥20KPa ≤12s 450±80
0.7 μm ≥10KPa ≤1s 350±50
1.0 μm ≥2KPa ≤2s 720±150
1.2 μm ≥2KPa ≤2s 720±150

Cobetter GF Membrane Filters are made of borosilicate fiberglass, suitable for filtration of coarse particles or viscous solutions. They have high compatibility with organic solvents, as well as strong acids and alkalis. Widely used in water pollution monitoring, cell collection and liquid scintillation counting.


• Chemical Compatibility pH 1-14.

• Contains binder, high mechanical strength.

• Fast flow rate, large load capacity, good interception effect

• High dirt holding capacity and high temperature resistance


• Pre-filtering before final filtering

• Protein, nucleic acid or serum sediment filtration

• Air purification filtration and air pollution detection

How to Use a Glass Fiber Membrane Filter

1. Take one filter paper (not the blue backing paper) out of the box.

2. Place the membrane filter on the funnel assembly.

3. Adjust the sample container on the proper position.

4. Fix with a locker clip or clamp.

5. Attach the vacuum pump to the filtration set.

6. Pour the sample into the sample container and turn on the vacuum.

How to Choose a Membrane Filter

Medium, buffer filtration ---------- PES membrane

Low protein adsorption filtration --- PVDF membrane

Solvent mixture ------------------ Nylon or Hydrophilic PTFE membrane

Non-polar (hydrophobic) solution -- Hydrophobic PTFE membrane

Polar (hydrophilic) solution -------- Nylon membrane

Corrosive solution ---------------- Hydrophobic PTFE membrane

Gas filtration --------------------- Hydrophobic PTFE membrane