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
Surbiton 1963
[Report of the Medical Officer of Health for Surbiton]
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MILK SUPPLY (Cont.)
Milk Sampling. 63 samples of milk were taken during the year and submitted to the following tests:-
| Clot on boiling test | Turbidity Test | Phosphatase Test. | Methylene Blue Test | |
|---|---|---|---|---|
| Tuberculin Tested (Farm cartoned) | - | - | - | 4 |
| Tuberculin Tested (Raw Milk) | 2 | - | - | 2 |
| — - 111 T.T.Pasteurised | - | - | 13 | 13 |
| Pasteurised (C.I.) | - | - | 1 | 1 |
| Pasteurised | - | - | 35 | 35 |
| |Sterilised | - | 8 | - | - |
All samples conformed to the required standard.
The phosphatase test indicates that pasteurisation has
been properly carried out; the methylene blue test is used to
determine cleanliness and keeping quality; the turbidity test
is a check on sterilisation and the clot on boiling test is used
to check cleanliness of tuberculin tested milk when sampled at
the farm before bottling.
ICE CREAM.
(i) Registration:
175 premises are registered by the Council under
Section 1 6, Food & Drugs Act, 1955, as under:-
For manufacture, storage and sale 4
For manufacture, storage and sale
but manufacture to be limited to
iced lollies 5
For storage and sale but not
manufacture 165
For storage only 1
(ii) Samples:
269 samples were taken, details being as follows:Ice
Cream.
Grade 1 205 76.21%
Grade 2 24 8.92%
Grade 3 25 9.29%
Grade 4 15 5.58%
100%
269
38.