Polycarbonate Track-Etched Membrane Filters
The white and hydrophilic polycarbonate track-etched membrane filters are manufactured from high grade polycarbonate film using track-etched technology.
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Their capillary pore structure is uniform and precise, with a narrow pore size distribution to retain particles on their surface. Track-etched membranes are an excellent choice for accurate fractionation of particulates because of their precise pore size.
Track-etch technology offers the user distinct performance advantages when excellent surface capture and high sample visibility are required. Their main applications are particulate analysis, epifluorescence microscopy, fluid clarification, cytology, cell biology, bioassays, water microbiology and environmental analysis.
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.
Polyamide membrane filters are hydrophilic and chemical resistant to alkaline solutions and organic solvents.
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.
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
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.