COBETTER Hydrophobic Polypropylene Disc Membrane Filters 25/50 pcs/pk

In stock
Part No. MFPP-2225
Regular price $16.00 USD
Pore Size
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Materials Membrane PP
Wettability Weak Hydrophobic
Color White
Physical Properties Filter Diameter 25mm/47mm/90mm/150mm/200mm
Pore Size 0.22μm/0.45μm/1.0μm/3.0μm/5.0μm/10.0μm/20.0μm
Maximum Operating Temp. 90°C
pH Range 1.0 – 14.0
Sterility Delivery Condition Nonsterile
Package Pack Size 50/pk, 25/pk


Pore Size Average Water Breakthrough (water 20°C) Air Flow Rate (@100ml*1in²*4.88in.water) Thickness (μm)
0.22 μm ≥40KPa ≤40s 200±50
0.45 μm ≥25KPa ≤15s 200±50
1.0 μm ≥15KPa ≤6s 210±50
3.0 μm ≥10KPa ≤2s 190±60
5.0 μm ≥5KPa ≤0.6s 440±100
10.0 μm ≥5KPa ≤0.6s 150±50
20.0 μm ≥3KPa ≤0.15s 220±70

Cobetter PP (polypropylene) membrane filter is a preferred choice for aggressive filtration applications. This plastic polymer has very good resistance to a broad range of chemicals even at high temperatures. Polypropylene filter membrane has large dirt holding capacity and fast filtration flow rate, especially suitable for filtration of solutions with more impurities or higher viscosity.


· Chemical Compatibility pH 1-14

· Natural hydrophobic deep filter material

· High dirt holding capacity and high flow rate.


· Filtration of aqueous and most organic solutions,

· Depth filtration, gas sterilization, the capture of aqueous aerosols, and gas filtration.

How to Use a PP 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