Biotechnology Grade Purity (anhydrous): >99.5 Specific rotation: +53.6 to +53.2° Insolubles: Residue after Ignition: Chloride: Sulfate and Sulfite: Heavy Metals (as Pb): Iron: Moisture (105°C): 8-9% RNase and DNase, Protease activity: None detected

A strong chaotropic agent used at high concentrations for denaturing native proteins and inactivating RNAses. Biotechnology Grade (also available in Proteomics Grade) A260: A230: Lead: Iron: Melting Range: 184-186°C RNase/DNase Activity: None detected

Biotechnology Grade Specific Rotation: 52.5 to 53.0° Moisture (105°C): Chloride: Sulfate and Sulfite: Arsenic: vHeavy metals (as Pb): Iron: RNAse/Protease Activity: None detected