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238
The 308 samples of Ordinary Milk contained total bacteri:
per m.l. as follows : —
0—1,000 7
1,000—5,000 37
5,000—10,000 39
10,000—20,000 36
20,000—30,000 23
30,000—40,000 18
40,000—50,000 13
50,000—100,000 36
100,000—150,000 22
150,000—200,000 8
200,000—250,000 12
250,000—500,000 22
500,000—750,000 8
750,000—1,000,000 8
1,000,000—2,000,000 6
Over 2,000,000 13
308
Eight samples were taken for inoculation test only.
There is no standard fixed for total bacteria per millilitre in
ordinary commercial milk, but for the purposes of comparison a
maximum count of 100,000 per m.l. is taken. It will be seen
that 209 of the samples contained total bacteria in accordance
with that comparison. It has to be remembered that a proportion
of this milk has been subjected to commercial pasteurisation.
One sample of sterilised milk was taken during the year and
contained 1,200 bacteria per millilitre.