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
Coulsdon and Purley 1959
[Report of the Medical Officer of Health for Coulsdon]
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A total of 184 samples of milk was submitted for bacteriological
examination, with the results set out in the following table :—
TESTS REQUIRED BY THE MILK (SPECIAL DESIGNATION)
REGULATIONS, 1949-1954
TABLE XV
| Designation | Number | Methylene Blue | Phosphatase | T urbidity | |||
|---|---|---|---|---|---|---|---|
| Satisfactory | Unsatisfactory | Satisfactory | Unsatisfactory | Satisfactory | Unsatisfactory | ||
| Pasteurised | 143 | 143 | — | 143 | — | — | — |
| T.T. (Raw) | 20 | 18 | 2 | — | — | — | — |
| T.T. (Pasteurised) | 10 | 10 | — | 10 | — | — | — |
| Sterilised | 11 | — | — | — | — | 11 | — |
| Total | 184 | 171 | 2 | 153 | — | 11 | — |
It will be seen that of these samples only two raw milks failed
to pass the methylene blue (keeping quality) test and the efficiency
of modern pasteurisation is reflected in the results of the phosphatase
testing of the samples.
A total of 65 washed milk bottles was submitted for
bacteriological examination with satisfactory results.
Ice Cream The Ice Cream (Heat Treatment etc.) Regulations,
1947 to 1952
Ice cream which is now an important and popular item of
food, has been the subject of special legislation and more strict
control in post war years with the result that its manufacture is
mainly undertaken by the large companies who produce an article
of uniform quality, pre-packed in a variety of ways for sale by local
retailers, from modern refrigerated units.
One hundred and thirteen premises are registered for the sale
of ice cream within the district and although two premises are also
registered for the manufacture of this product, no manufacturing
has been carried out for some years.
A total of 100 samples of ice cream was examined for bacterial
quality by submission to the methylene blue reduction test, and
placed in the following provisional grades :—
Grade I 99
Grade II —
Grade III 1
Grade IV —
These results can be considered very satisfactory.
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