MEMBRA-CEL®
Dialysis Membranes
Seamless cellulose membranes featuring sharp Molecular Weight Cut-Offs in both tubing and flat sheets. MEMBRA-CEL® dialysis membranes are made of regenerated cellulose using the viscose process. These semi-permeable membranes have distinct Molecular Weight Cut-Off (MWCOs) of 14,000, 7,000 and 3,500 daltons by excluding macromolecules with molecular radii from 50 down to 35 angstroms.
Features & Benefits
- Excellent pH and chemical stability, the membranes are stable in weak acids and bases
- Great compatibility with many salts –CaCl2 , (NH4 )2 SO4 , etc.
- Excellent compatibility with most aqueous organic solvents, such as alcohols and ketones
- Excellent temperature resistance
- Sensitive to microbial activity when humidified, however, growth of cellulolytic micro-organisms can be prevented by keeping the membrane in water containing benzoate, benzoic acid, or other preservatives
- Very low protein absorption
- Available in widths ranging from 10mm to 172mm and in rolls lengths of 100 or 500 feet
- Contains low levels of contaminants, some membranes contain glycerin as a humectant, contaminants may be removed by boiling prior to use
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Submit InquirySpecifications
MOLECULAR WEIGHT CUT-OFF
- 14,000, 7,500 or 3,500 daltons
pH STABILITY RANGE
- Stable in the pH range of 5 to 9
PROTEIN ABSORPTION
- < 1 ng/g of dry membrane
TEMPERATURE RESISTANCE
- Membranes can be sterilized by autoclave
- Membranes with aqueous solutions can be frozen
MICROBIAL RESISTANCE
- Membranes are sensitive to cellulose activity when humidified, using a preservative like benzoate will control bacterial growth