Hydrophilic PES Disc Membrane Filters 25/50/100/ pcs/pk
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Cobetter PES (polyethersulfone) membrane filter has asymmetric pore sizes, features high flow rates and high dirty loading capacity when filtering media, buffers, and other biological solutions. PES can withstand autoclaving and gamma irradiation. It is ideal for sterile filtration for many biological applications.
Specifications
| Materials | Membrane | PES |
| Wettability | Hydrophilic | |
| Color | White | |
| Physical Properties | Filter Diameter | 13/25/47/50/60/90/100/110/142/150/200/293 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 |
Performance
| Pore Size | Bubble 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 |
Features
- Naturally strong hydrophilic
- Chemical compatibility: pH 3-14
- Asymmetric structure
- High flow rate
- Low protein binding
Applications
- Sterile filtration
- Aqueous solution filtration
- Liquid of high temperature filtration
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
