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2 of the samples failed to comply with the requirements of the Regulations,
one of these being also adulterated.
Of the samples which were satisfactory bacteriologically one was adulterated
and one was of poor quality.
Certified Milk and Grade A Milk (Pasteurised). The milk must not
contain more than 30,000 organisms per c.c. and must not contain coliform
bacillus in 1/10 c.c.
1 sample of Certified Milk showed 1,000 organisms per c.c. and the coliform
bacillus was absent in 1/10 c.c.
5 samples of Grade A Milk (Pasteurised) gave low bacteria counts as
might be expected from Grade A Milk which has been pasteurised. The
highest count showed 3,320 organisms per c.c. The coliform bacillus was
absent in 1/10 c.c. in each case.
Grade A (Tuberculin tested) Milk and Grade A Milk. The milk must not
contain more than 200,000 organisms per c.c. and must not contain coliform
bacillus in 1/100 c.c.
In 14 samples of Grade A (Tuberculin tested) Milk, the highest bacteria
count showed 81,100 organisms per c.c. In 2 of these samples the coliform
bacillus was present in one out of three tubes which is regarded as satisfactory
by the regulations, and in two cases J 51 and S 48 the coliform bacillus was
present in 1/100 c.c. in all tubes. One of these samples S 48 was also 8 3 per
cent. deficient in fat and contained at least 35 per cent, added water. One
sample G92 otherwise satisfactory was deficient in fat to the extent of 3.3 per
cent. and one sample was of poor quality.
The vendors of samples J 51 and S 48 were cautioned.
In the case of sample G92 no action was taken. A further sample G 86
taken formally from the same vendor was deficient in fat, this sample is shown
in Table D.
1 sample of Grade A Milk contained 4,890 organisms per c.c., the coliform
bacillus being absent in 1/100 c.c.
Pasteurised Milk. The milk must not contain more than 100,000
organisms per c.c. (No test for the coliform bacillus is required). 9 samples
complied with the standard, the highest count being 10,000 organisms per c.c.
Examination for the Tubercle Bacillus. 8 samples of milk were tested
elsewhere for the Tubercle Bacillus by the inoculation method. In one case a
positive result was obtained.