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

In stock
Part No. MFPT-2213
Regular price $19.00 USD
Pore size
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Materials Membrane PTFE
Wettability Hydrophobic
Color White
Physical Properties Filter Diameter 13/25/47/50/60/90/100/110/142/150/293 mm
Pore Size 0.1/0.22/0.45/1.0/3.0/5.0 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 Average Water Breakthrough (water 20°C) Air Flow Rate (@100ml*1in²*4.88in.water) Thickness (μm)
0.1 μm ≥450KPa ≤35s 200±60
0.22 μm ≥300KPa ≤35s 210±70
0.45 μm ≥150KPa ≤15s 210±80
3.0 μm ≥80KPa ≤10s 210±80
5.0 μm ≥30KPa ≤6s 250±50

Cobetter hydrophobic PTFE membrane filters has broadest chemical compatibility and inertness and is mainly used for filtration of corrosive chemicals such as strong acid and alkali, finding applications in numerous industries, including pharmaceutical, biotech, food and beverage, and environmental monitoring.


• Naturally hydrophobic

• Biologically and chemically inert

• Strong chemical compatibility with pH range 1-14


• Aerosol sampling

• Air venting filtration

• Filtration of strong acids and aggressive solutions

• HPLC and organic solvent filtration

How to Use a Hydrophobic 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