Since all “Standard Grade” Regenerated Cellulose (RC) membrane is produced by an industrywide process that introduces trace levels of heavy metals and sulfide impurities, these economical and versatile membranes are intended for general and less critical applications in which these impurities are negligible. Only Repligen’s SpectraPor Standard Grade RC membrane is available in 3 treatment types and 2 configurations for both lab-scale and large volume dialysis.
Repligen’s high purity Biotech Grade dialysis membranes are made in a cleanroom environment using a proprietary process free of sulfur compounds and heavy metals. Since they do not contain trace levels of these impurities and do not need special cleaning or treatment, Biotech Grade membranes are preferred for more critical lab-scale and GMP dialysis applications. Biotech Grade Dialysis Tubing is available in 2 cellulosic polymer types: Cellulose Ester (CE) and Regenerated Cellulose (RC).