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
Battersea 1964
[Report of the Medical Officer of Health for Battersea Borough]
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42
Milk.
Forty-three formal samples of milk were taken during the year.
Of the 43 samples, 10 were designated as "Channel Islands"
or "South Devon" milk, for which a higher minimum percentage
(viz., 4 per cent.) of milk fat content is provided for under arrangements
made between the producers and the Ministry of Agriculture, Fisheries
and Food. All of these samples were reported to be in conformity
with this standard, their average composition being:—
Milk fat 4.41 per cent.
Non-fatty solids 8.92 ,,
Total milk solids 13.33 „
The milk fat content of the 10 samples of "Channel Islands" or "South Devon" milk ranged as under:—
| between 4.5 and 4.6 per cent. | 3 samples |
| ,, 4.4 „ 4.5 ,, | 4 ,, |
| ,, 4.3 „ 4.4 ,, | 1 sample |
| ,, 4.2 „ 4.3 ,, | 2 samples |
| 10 |
All the 33 samples of ordinary milk were reported as genuine and the average composition was as follows:—
| Milk fat | 3.67 per cent. |
| Non-fatty solids | 8.65 ,, |
| Total milk solids | 12.32 ,, |
Their content of milk fat ranged as follows:—
| Over 4.0 per cent. | 2 samples |
| between 3.9 and 4.0 „ | 4 ,, |
| ,, 3.8 „ 3.9 ,, | 4 ,, |
| ,, 3.7 „ 3.8 ,, | 3 ,, |
| ,, 3.6 „ 3.7 ,, | 9 ,, |
| ,, 3.5 „ 3.6 ,, | 7 ,, |
| ,, 3.4 „ 3.5 ,, | 3 ,, |
| ,, 3.3 „ 3.4 ,, | 1 sample 33 |
Heat Treated Milk. Samples of pasteurised and sterilised milk are taken at regular intervals for submission to the Public Health Laboratory Service forthe prescribed tests, and during the year samples as under were taken with the results set out:—
| Phosphatase | Methylene Blue | |||
|---|---|---|---|---|
| Satisfactory | Failed | Satisfactory | Failed | |
| Pasteurised | 4 | — | 4 | — |
| Turbidity | ||||
| Satisfactory | Failed | |||
| Sterilised | 11 | — | ||