This standard specifies a method with liquid medium for the enumeration of coliforms. It is applicable to milk and milk products. Inoculation of tubes with a selective culture medium and incubation. Examination of the tubes. Calculation of the number of coliforms per ml or g sample from the number of tubes in which gas formation has been noted.
DIN 10172-1:1992 history
1992DIN 10172-1:1992-04 Microbiological analysis of milk; determination of coliforms; method with liquid medium
1992DIN 10172-1:1992 Microbiological analysis of milk; determination of coliforms; method with liquid medium