Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Lewisham Borough]
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MILK
The Milk and Dairies (General) Regulations 1959
At the end of the year there were 206 persons registered for the distribution of milk
from the premises within the Borough.
There are no premises in the Borough used as dairies.
Milk (Special Designations) Licences
Licences to expire on 31st December, 1975, were issued during the year as
follows:-
Table 62
Licences issued during 1971 | Total licences issued | |
---|---|---|
for sale of untreated milk | 3 | 49 |
for sale of pasteurised milk | 55 | 221 |
for sale of sterilised milk | 35 | 170 |
for sale of ultra heat treated milk | 18 | 116 |
Analysis of Milk
During the year under review 37 samples of milk were submitted to the public
analyst by the Council's inspectors none of which was deficient in milk solids.
ICE-CREAM
Grading
Icecream is submitted to the Public Health Laboratory for bacteriological examination.
The icecream is graded according to the time taken to decolorise a dye,
methylene blue. The test is a provisional one and because of the many factors which
govern the hygienic quality of icecream it is recommended officially that judgment
should be based on a series of samples and that too much attention should not be
paid to the result of an individual sample. It is suggested that over a six-monthly
period, at least 50 per cent. of a vendor's samples should fall into grade I, 80 per
cent. into grades I or II, not more than 20 per cent. in grade III and none into
grade IV.
During the year 46 samples of icecream were submitted for bacteriological
examination with the following results:—
Table 63
Samples | % | |
---|---|---|
Grade I | 19 | 41 |
Grade II | 10 | 22 |
Grade III | 10 | 22 |
Grade IV | 7 | 15 |
TOTAL | 46 | 100 |
In general, grades I and II are satisfactory, while grades III and IV may indicate
some defect in manufacture, handling or storage. Such cases are followed up and
advice given.
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