Microbial assay for Vitamin B12

Hi everyone,

if any one know about Vitamin B12 Microbial assay method and can you availabe pls give us and the technique which one organism used and their ATCC number
NOR
if any guideline clearly explaining in Vitamin B12 assay method & type of organism are used pls suggest that guideline.

eagerly awaiting your response.

2 Likes