COBETTER Hydrophilic PTFE Membrane Filters Lab Disc Filter 25/50/100 pcs/pk
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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 |
Performance
| 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 an universal membrane and ideal for both aqueous and solvent filtration. For Hydrophilic PTFE membrane, methanol pre-wet is not required when filtering aqueous solutions.
Features
· Modified Hydrophilic.
· Very low extractables.
· Strong chemical compatibility with pH range of 1-14.
· A universal membrane ideal for both aqueous and solvent filtration.
Application
· Compatible with most HPLC solutions, filtration of aqueous and organic solutions.
· For Hydrophilic PTFE membrane, methanol pre-wet is not required when filtering aqueous solutions.
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
