21 C.F.R. § 112.55
What microbial standards apply to the treatment processes in § 112.54?
Cite as 21 C.F.R. § 112.55 (2026)
The following microbial standards apply to the treatment processes in § 112.54 as set forth in that section.
(a) For
L. monocytogenes,
Salmonella
species, and
E. coli
O157:H7, the relevant standards in the table in this paragraph (a); or
For the microorganism—
The microbial standard is—
(1)
L. monocytogenes
Not detected using a method that can detect one colony forming unit (CFU) per 5 gram (or milliliter, if liquid is being sampled) analytical portion.
(2)
Salmonella
species
Not detected using a method that can detect three most probable numbers (MPN) per 4 grams (or milliliter, if liquid is being sampled) of total solids.
(3)
E. coli
O157:H7
Not detected using a method that can detect 0.3 MPN per 1 gram (or milliliter, if liquid is being sampled) analytical portion.
(b)
Salmonella
species are not detected using a method that can detect three MPN
Salmonella
species per 4 grams (or milliliter, if liquid is being sampled) of total solids; and less than 1,000 MPN fecal coliforms per gram (or milliliter, if liquid is being sampled) of total solids.
[80 FR 74547, Nov. 27, 2015, as amended at 81 FR 26468, May 3, 2016]
- Cross-references to the CFR
- 112.54