The method consists in preparing of two poured plates, using a specified culture medium, and using a specified test sample, further preparation of other pairs of poured plates, under the same conditions, using decimal dilutions of the test sample. Then aerobic incubation of the plates at 30 C for 72 h, and calculation of the number of micro-organisms per millilitre or per gram of sample from the number of colonies obtained in selected plates.
Số hiệu tiêu chuẩn
ISO 4833
Tên tiêu chuẩn
Microbiology; General guidance for enumeration of micro-organisms; Colony count technique at 30 degrees C
Ngày phát hành
1978-02-00
Tiêu chuẩn tương đương
BS 5763-1 (1979-10-31), NEQ * NF V08-011 (1978-11-01), IDT * TS 7703 (1989-12-12), IDT * NP (1995), IDT * NP-1409, MOD * NP-3278, IDT * UNI ISO 4833 (1988), IDT
Từ khóa
Animal products * Bacteria * Colony count techniques * Counting * Food products * Microbiological analysis * Microbiology * Microorganisms