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239
The 240 samples of Ordinary Milk contained total bacteria
per c.c. as follows : —
0—1,000 13
1,000—5,000 43
5,000—10,000 29
10,000—20,000 37
20,000—30,000 31
30,000—40,000 10
40,000—50,000 11
50,000—100,000 23
100,000—150,000 7
150,000—200,000 5
200,000—250,000 5
250,000—500,000 8
500,000—750,000 2
750,000—1,000,000 4
1.000,000—2,000,000 2
Over 2,000,000 10
240
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 209
of the samples contained total bacteria in accordance with that
standard. It has to be remembered that a proportion of this milk
has been subjected to commercial pasteurisation.