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74
The 374 samples of ordinary milk contained total bacteria per
c.c. as follows:—
0—1,000 2
1,000—5,000 20
5,000—10,000 20
10,000—20,000 40
20,000—30,000 17
30,000—40,000 25
40,000—50,000 19
50,000—100,000 56
100,000—150,000 27
150,000—200,000 14
200,000—250,000 8
250,000—500,000 37
500,000—750,000 10
750,000—1,000,000 10
1,000,000—2,000,000 22
Over 2,000,000 47
374
There is no standard fixed for total bacteria per c.c. in
ordinary commercial milk, but comparing the results with the
Grade A standard, i.e., 200,000 per c.c., it will be seen that 240
of the samples contained total bacteria below that standard. It
has to be remembered that a proportion of this milk has been
subjected to commercial pasteurisation.
The 374 samples taken under the Milk and Dairies (Consolidation)
Act, 1915, were samples of milk which had been produced
in the following areas:—