Biosafety classification is based on U.S. Public Health Service Guidelines, it is the responsibility of the customer to ensure that their facilities comply with biosafety regulations for their own country.
AACC Vitamin B12--microbiological method. St. Paul, MN, 1999
Foster JC, et al. Cup assay with vitamin B12 as a standard. Science 110: 507-509, 1949.
