NYL - Nylon (Polyamide):
Hydrophilic and widely used in both aqueous and organic solvent filtration applications. Well suited for clarification of buffers and nutrient media with a low level of extractibles.
PTFE - Polytetrafluoroethylene:
Permanently hydrophobic filter material, very suitable for air and gas particulate filtration. Extremely resistant to aggressive solvents and acids (pH 1-14). Must be prewetted with ethanol before the filtration of aqueous media.
CA - Cellulose Acetate:
Low protein-binding, well suited for sterile filtration and clarification of aqueous solutions, nutrient media, buffers, and sera. Also compatible with alcohol and oil. These hydrophilic membranes offer high and consistent flow rates.
MCE - Mixed Cellulose Esters (Cellulose Nitrate):
Set standard in both analytical and microbiological filtration. Available in a wide range of pore size and is well suited for microbial analysis in water, food and beverage application.
PES - Polyether Sulfone:
Uniform pore structure with high mechanical stability and chemical resistance. Offers excellent flow rate for critical filtration situations where high throughput is required with the lowest protein adsorption. First choice for the filtration of biological and pharmaceutical specimens.
PVDF - Polyvinylidene fluoride:
Resistant to solvents, good heat resistance properties and low protein binding. Applications include the preparation of HPLC samples and sterilization applications. PVDF has the advantage of being less brittle than MCE and can be used in similar applications despite a higher protein binding capacity.