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
Kingston upon Thames 1972
[Report of the Medical Officer of Health for Kingston-upon-Thames]
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66
FOOD AND FOOD PREMISES
Milk Supply
The following table shows the number of premises from which milk
is sold and the types of licences in force during 1972 under the provisions
of the Milk (Special Designations) Regulations, 1963 and 1965.
These Regulations prescribe t h at the licence shall cover the period expiring on the 31st Decembers, 1975 and all are dealers ' licences to sell pre-packed milk.
| Premises and type of licence | Number |
|---|---|
| Premises in which milk is sold | 104 |
| Pasteurised milk | 90 |
| Sterilised milk | 37 |
| Ultra Heat Treated milk | 53 |
| Untreated milk | 10 |
Bacteriological Examination of Milk
During the year 65 samples of milk were sent to the Public Health Laboratory at Epsom and the following is a tabulated statement of the results: -
| Phosphatase Test | Methylene Blue Vest | Turbidity Test | Colony Count | |||||
|---|---|---|---|---|---|---|---|---|
| Pass | Fail | Pass | Fail | Void | Pass | Fail | Under 10 | |
| Pasteurised | 49 | – | 45 | – | 4 | – | – | – |
| Ultra Heat Treated | – | – | – | – | – | – | – | 10 |
| Sterilised | – | – | – | – | – | 6 | – | – |
The phosphatase test indicates that pasteurisation has been
properly carried out; the methylene blue test is used to determine
cleanliness and keeping quality and the turbidity test is a check on
sterilisation.