Attention:

Certain features of sigmaaldrich.com will be down for maintenance Saturday afternoon/evening, February 24th starting at 3:00 pm CT until 9:00 pm CT.

Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

Dialysis

Dialysis tubing, sacks, and disposable dialyzers are offered for those needing to remove salts and other small molecules from larger molecules or colloidal particles. These semi permable membranes are usually made of regenerated cellulose.