London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Malden and Coombe 1955
[Report of the Medical Officer of Health for Malden & Coombe]
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19
During the year the following licences were issued under
the Milk (Special Designations) (Raw Milk) or the (Special
Designations) (Pasteurised and Sterilised Milk) Regulations,
1949.
Dealers
Tuberculin tested 9
Pasteurised 9
Pasteuriser's 1
Sterilised 14
Supplementary.
Tuberculin tested 9
Pasteurised 9
Sterilised 10
The difference between a dealer's and a supplementary licence
is that, if a dairyman has premises in a local government area
where he retails milk he is issued with a dealer's licence. Should
he retail milk in another area he must obtain a supplementary
licence from the Council of that area.
DETAILS OF MILK TESTING.
| CLASS OF MILK | Number of Samples Tested | Appropriate Tests | Number of Samples | |
|---|---|---|---|---|
| Passed | Failed | |||
| Pasteurised | 84 | Phosphatase | 84 | — |
| Methylene Blue | 84 | — | ||
| Sterilised | 5 | Turbidity | 5 | — |
| Tuberculin Tested (Pasteurised) | 52 | Phosphatase | 52 | — |
| Methylene Blue | 52 | — | ||
| Tuberculin Tested (Farm Bottled) | 2 | Methylene Blue | 2 | — |
| Biological | 2 | — | ||
The purpose of the phosphatase and methylene blue tests is to
determine respectively whether or not the milk has been adequately
heat treated and whether it is of good keeping quality.
The turbidity test for sterilised milk is to determine whether
or not the milk has been adequately sterilised.