Hydrophobic PTFE Membrane Filters
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The hydrophobic PTFE membrane filters are made of polytetra-fluorethylene (PTFE) only and are therefore permanently hydrophobic. Unlike hydrophilic filter types, they are not wetted by air humidity.
They are available in different pore sizes from 0.2 to 5 µm.
Top Features of Cellulose Acetate Membrane Filters
- High flow rates and thermal stability
- Excellently suited for pressure filtration devices
- Compatible with aqueous solutions, oils, alcohols and other organic solvents
Popular Applications for Cellulose Acetate Membrane Filters
- Filtration of aqueous solutions
- Solvent filtration mixtures
- Clarification
The white and hydrophilic polycarbonate track-etched membrane filters are manufactured from high grade polycarbonate film using track-etched technology.
Polyethersulfone membrane filters are hydrophilic- have high flow rates- a low non-specific protein adsorption and are chemically resistant over a pH range of 1 – 14.
Polyamide membrane filters are hydrophilic and chemical resistant to alkaline solutions and organic solvents.
The regenerated cellulose membrane filters are made of regenerated cellulose reinforced with a cellulose nonwoven.
The cellulose nitrate (CN) or also called mixed cellulose ester (MCE) membrane filters are composed of cellulose nitrate and a small content of cellulose acetate. They are recommended for a broad range of applications like the filtration of aqueous solutions or for sample preparation.