Microbiological Testing Methods FDA BAM, Chapter 1 (eff. 04/2022) (opens in new window) Download PDF FDA BAM, Chapter 2 (eff. 11/2000) (opens in new window) Download PDF FDA BAM, Chapter 4 (eff. 10/2020) (opens in new window) Download PDF FDA BAM, Chapter 5 (eff. 03/2022) (opens in new window) Download PDF FDA BAM, Chapter 18 (eff. 04/2001) (opens in new window) Download PDF USDA: FSIS. Microbiology Laboratory Guidebook, Method Number 4.11 (eff. 08/16/2021) (opens in new window) Download PDF USDA: FSIS. Microbiology Laboratory Guidebook, Method Number 5C.02 (eff. 08/16/2021) (opens in new window) Download PDF