Attention:

Certain features of Sigma-Aldrich.com will be down for maintenance the evening of Friday August 18th starting at 8:00 pm CDT until Saturday August 19th at 12:01 pm CDT.   Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

Digestion Reagents

Sample preparation for trace analysis applications requires reagents of highest purity. Specifically, they must have very low metal content to ensure appropriately low blank readings. Suprapur and Ultrapur reagents include high purity acids, bases and salts that are designed for trace and ultra-trace analysis. These reagents are handled under clean-room conditions and supplied in special bottles to ensure long-term purity.