Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Kensington Borough]
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20
In March, 1946, the Milk (Special Designations) Regulations,
1946, came into operation. Prior to this date, it was a requirement
that tuberculin tested milk (pasteurised) and pasteurised
milk must not contain more than thirty thousand and one hundred
thousand bacteria per ml. respectively, but with the coming into
force of the 1946 Regulations these standards were abolished, and
the phosphatase and methylene blue tests were substituted for
these grades of milk.
Heat Treated Milk (Prescribed Tests) Order, 1944.
Under Defence Regulation 55G, (restrictions on the sale
of raw milk), the Minister of Pood may specify areas in which
it will be illegal to sell milk unless it is either -
(a) Tuberculin tested milk.
(b) Accredited milk.
(c) Processed milk (heat-treated,
pasteurised, or sterilised.)
When an area has been specified all processed milk sold
in that area must conform to the methylene blue and phosphatase
tests as prescribed in the Heat Treated Milk (Prescribed Tests)
Order, 1944, made by the Minister of Health.
No area in London has yet been specified, but the
minister of Food has, however, requested the Council to apply
the two tests to all processed milks, and to report the results
to him monthly.
The following table shows the number of samples of processed milk taken during the year, together with the results of the examinations.
| !Grade. | Number ofsamples. | Methylene blue test. | Phosphatase test. | ||
|---|---|---|---|---|---|
| Passed. | Failed. | Passed. | Failed. | ||
| Tuberculin tested (pasteurised). | 23 | 19 | 4 | 21 | 2 |
| Pasteurised. | 59 | 59 | 57 | 2 | |
| Heat treated. | 14 | 12 | 2 | 13 | 1 |
| Sterilised. | 4 | 3 | 1 | 3 | 1 |
| TOTALS | 100 | 93 | 7 | 94 | 6 |
Warning letters were sent to the vendors of the unsatisfactory
samples.
Adulteration of Food.
Three hundred and seventy-nine formal samples of food
and drugs were taken, of which seven (1.84%) were adulterated
Six hundred and twenty-one informal samples were taken, of
which seven (1.12%) were adulterated.