Bacillus spizizenii strain NRS 231 (ATCC 6633™) is a whole-genome sequenced strain used in antimicrobial, sporicidal, and antibiotic potency testing. This strain is recommended as a test organism in USP <2021>, <61>, <71>, and <81>.
Recommended companion products:
MicroQuant™ Bacillus spizizenii, low CFU (Fisher Cat. No. NC3456053, ATCC 6633-LQ-PACK™)
Genomic DNA (Fisher Cat. No. 50-238-4902, ATCC 6633DQ™).