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 1964
[Report of the Medical Officer of Health for Surbiton]
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MILK SUPPLY (Cont.)
Milk Sampling. 51 samples of milk were taken during the year and submitted to the following tests:-
| Turbidity Test. | Methylene Blue Test, | Phosphatase Test. | Animal Inoculation Test. | |
|---|---|---|---|---|
| Pasteurised | - | 21 | 21 | - |
| T.T. Pasteurised | - | 17 | 17 | - |
| Pasteurised C.I. | - | 3 | 3 | - |
| Sterilised | 4 | - | - | - |
| Untreated | - | 3 | - | - |
| Tuberculin Tested | - | 1 | - | 2 |
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 animal inoculation test is for the purpose of
detecting the presence of living tubercle bacilli or brucella.
All samples conformed to the required standards except in the
case of two samples of untreated milk which failed the methylene blue
test. These were both from a vending machine and after correspondence
with the vendor, who is also the producer, subsequent samples were
satisfactory. It is understood that he will shortly install
pasteurising plant at his dairy which is outside the Borough.
Ice Cream
| Grade 1 | 53 | 96.367% | 100% | |
| Grade 2 | 1 | 1.82% | ||
| Grade 3 | 1 | 1.82% | ||
| Grade 4 | Nil | |||
| 55 | ||||
ICE CREAM.
(i) Registrations
One hundred and sixty-two premises are registered by the Counci
under Section 16, 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 4
For storage and sale but not
manufacture 153
For storage only 1
(ii) Samples:
55 samples were taken, details being as follows:-
36