COBETTER Hydrophilic PES Disc Membrane Filters 25/50/100/ pcs/pk

In stock
Part No. MFPES-2213
Regular price $17.00 USD
Pore Size
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Materials Membrane PES
Wettability Hydrophilic
Color White
Physical Properties Filter Diameter 13/25/47/50/60/90/100/110/142/150/200/300 mm
Pore Size 0.1/0.22/0.45/0.8/1.2/3.0/5.0/8.0 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 Bubbling Point (Water 20°C) Water Flow Rate (s/50ml/12.68cm²) @-30KPa (water 20°C) Thickness (μm)
0.1 μm ≥400KPa ≤85s 110±15
0.22 μm ≥350KPa ≤35s 110±15
0.45 μm ≥200KPa ≤15s 130±20
0.8 μm ≥100KPa ≤15s 150±30
1.2 μm ≥60KPa ≤12s 130±15
3.0 μm ≥40KPa ≤4.5s 100±15
5.0 μm ≥30KPa ≤3s 95±15

PES (polyethersulfone) membrane filter is made of a modified polyethersulfone polymer. Cobetter’s PES membrane filter has very low protein binding and high liquid flow rates. PES can withstand autoclaving and is the membrane of choice for many clinical applications.


· Naturally Hydrophilic

· Asymmetric structure

· High flow rate

· Low protein binding

· Chemical compatibility: PH 3-14

· PES membrane can withstand high temperature sterilization at 121-134°C


· Particle retention

· Aqueous solution filtration

· Choices for many clinical applications

How to Use a PES 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