For dialysis and ultrafiltration in biochemical work. Molecular weight cut-off is 3500. Pure, regenerated, natural cellulose. Free from fixed charges. Contain some glycerin and few impurities, which may be removed by washing. Porosity throughout roll is usually very uniform if roll is preserved carefully. Will change only slowly over a period of months if kept in the original polyethylene bag and refrigerated. Roll length: 15.2m (50').
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