COBETTER Hydrophilic PTFE Membrane Filters Lab Disc Filter 25/50/100 pcs/pk

In stock
Part No. MFPTH-2213
Regular price $21.00 USD
Pore Size
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Materials Membrane PTFE
Wettability Hydrophilic
Color White
Physical Properties Filter Diameter 13/25/47/50/60/90/100/110/150 mm
Pore Size 0.1/0.22/0.45 μm
Maximum Operating Temp. 140°C
pH Range 1.0 – 14.0
Sterility Delivery Condition Nonsterile
Package Pack Size 100/pk, 50/pk, 25/pk


Pore Size Bubbling Point (Water 20°C) Water Flow Rate (s/50ml/12.68cm²) @-30KPa (water 20°C) Thickness (μm)
0.1 μm ≥300KPa ≤120s 200±60
0.22 μm ≥300KPa ≤55s 210±70
0.45 μm ≥180KPa ≤30s 210±70

Cobetter hydrophilic PTFE membrane is a universal membrane which is ideal for both aqueous and solvent filtration. It has excellent chemical compatibility. For Hydrophilic PTFE membranes, methanol pre-wet is not required when filtering aqueous solutions.


• Hydrophilic

• Broad chemical compatibility

• Strong chemical compatibility with pH range of 1-14

• Very low extractables

• A universal membrane ideal for both aqueous and solvent filtration


• Compatible with most HPLC solutions, filtration of aqueous and organic solutions

• Particularly suitable for filtration of water-miscible organic solvents and disinfectant filtration

How to Use a Hydrophilic PTFE 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