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
Shoreditch 1949
[Report of the Medical Officer of Health for Shoreditch]
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40.
BACTERIOLOGICAL SAMPLING OF MILK.
44 Samples of pasteurised milk, 1 sample of heat-treated milk,
17 samples of "TT" pasteurised milk and 8 samples of sterilised milk
were submitted for phosphatase and methylene blue tests. All samples
satisfied the phosphatase test and all but two pasteurised satisfied
the methylene blue test. Warning letters were sent to the vendors in
respect of these latter samples.
CONDENSED MILK REGULATIONS.
16 Samples of condensed milk were submitted for analysis under
the eb ove regulations and the composition was found to be satisfactory
in all cases. The label of one sample contravened the regulation in
that the type used for the statutory declaration was only one-tenth
of an inoh in height, instead of not less than one-eighth of an inch.
This was reported to the Food Standards Division of the Ministry of
Food.
BACTERIOLOGICAL SAMPLING CF IDE CREAM.
16 Samples which were submitted for plate count gave the following results of bacteria per millilitre.
| 0 to 1,000 | 1,000 to 5,000 | 5,000 to 10,000 | 10,000 to 50,000 | 50,000 to 100,000 | 100,000 to 1,000,000 | 1 million and over |
|---|---|---|---|---|---|---|
| 4 | 4 | 2 | 4 | 1 | 1 | - |
43 Samples were submitted to the methylene blue test with results
as follows :-
Grade 1 11
" 2 13
" 3 11
" 4 8
20 Samples were examined for B. Coli with the following results
Absent in 1 ml 16
Present in 1 ml 4
Warning letters were sent to the makers of sub-standard samples,and
subsequent inspections and tests showed improved quality in the products.