Hydrophobic PTFE Membrane Filters Lab Disc Filters 25/50/100 pcs/pk
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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.
Specifications
| 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 |
Performance
| 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 |
Features
- Naturally hydrophobic
- Biologically and chemically inert
- Strong chemical compatibility with pH range 1-14
Applications
- 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
