 
Because Standard Regenerated Cellulose (RC) is composed of natural
cellulose regenerated from cotton linters, these membranes are
perfectly suited for a broad range of laboratory dialysis. This clear and
flexible membrane type with a symmetric porosity is economical and
sturdy, ideal for desalting, buffer exchanges, macromolecular purifications
and other general applications.
Possessing a broad range of chemical compatibilities, Standard RC membranes can be used
with dilute strong acids and bases, concentrated weak acids and bases, most alcohols
and some mild or dilute organic solvents, including DMSO.
Exposure to some strong organic solvents may damage RC
membranes. Standard RC can be used with pH 2-12 & temperatures
4-121 °C. While the low level heavy metal and sulfide impurities
in Standard RC typically pose no problem, they can easily be eliminated
using Spectrum's Heavy Metal Cleaning Solution and Sulfide
Removal Solution. Standard RC Membrane is available in rolls
of dialysis tubing (dry or pre-treated), ready-to-use dialysis sacks &
flat sheet (discs or square sheets).
There are 7 different categories of Standard RC Membrane, Spectra/Por 1 - 7,
each possessing unique desirable properties to meet
different application needs:
| MWCO: | 6.000 - 8.000 Daltons |
| Properties: | Standard RC with glycerol for general dialysis |
| MWCO: | 12.000 - 14.000 Daltons |
| Properties: | Standard RC with glycerol in special membrane dimensions and/or high permeability |
| MWCO: | 3.500 Daltons |
| Properties: | Standard RC with glycerol for general dialysis |
| MWCO: | 12.000 - 14.000 Daltons |
| Properties: | Standard RC with glycerol for general dialysis |
| MWCO: | 12.000 - 14.000 Daltons |
| Properties: | Standard RC with glycerol reinforced with porous paper for large volume and weight |
| MWCO: | 1, 2, 3,5, 8, 10, 15, 25 & 50 kD |
| Properties: | Standard RC in 0,1% sodium azide, pre-wetted |
| MWCO: | 1, 2, 3,5, 8, 10, 15, 25 & 50 kD |
| Properties: | Standard RC in 0,1% sodium azide, pre-treated to minimize heavy metals & sulfides |
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