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. 2020 May 14;148:e135. doi: 10.1017/S0950268820001016

Table 4.

Criteria for the interpretation of microbiology results

Satisfactory Borderline Unsatisfactory Unsatisfactory: potentially injurious to health
Bacterial pathogens
 Campylobacter in 25 ga Not detected N/A N/A Detected
CPS/ga <20 20 to ⩽104 N/A ⩾104
 E. coli O157, or any STEC in 25 g Not detected N/A N/A Detected
 L. monocytogenes/ga <20 20 to ⩽100 N/A >100b
 Salmonella in 25 ga Not detected N/A N/A Detected
Indicator organisms
ACCc <2 × 104 N/A ⩾2 × 104 N/A
Enterobacteriaceae <102 102 to ⩽104 >104 N/A
 E. coli/ga <20 20 to ⩽100 >100 N/A
 Coliforms <100 N/A ⩾100 N/A
 Listeria species (not L. monocytogenes)/ga <20 20 to <100 ⩾100 N/A

N/A, not applicable; STEC, Shiga toxin-producing E. coli; CPS, coagulase positive staphylococci.

Results for milk will be in 25 ml and cfu/ml.

a

HPA, 2009 [23].

b

European Commission, 2005 [13].

c

Food Safety and Hygiene (England) Regulations 2013, applicable to raw drinking milk only.