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
Bromley 1972
[Report of the Medical Officer of Health for Bromley]
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BACTERIOLOGICAL SAMPLES OF MILK
Samples of designated milks were taken and submitted for examination with the following results
| Satisfied | Failed | |
|---|---|---|
| Phosphatase Test | 120 | - |
| Methylene Blue Test | 151 | 6 |
| Ring Test | 54 | - |
The tests shown in the above table were applied for the following purposes
Phosphatase Tests Applied to 'Pasteurised' milk, to determine that the milk was satisfactorily
pasteurised.
Methylene Blue Tests Applied to 'Untreated' and 'Pasteurised' milks to indicate that the
bacterial content was within the prescribed standard.
Ring Test:- Applied to untreated milk to determine the presence of 'Brucellus abortus'.
Where samples failed to satisfy the prescribed tests, investigations were undertaken and
further samples obtained, the tests of which proved satisfactory.
BACTERIOLOGICAL SAMPLES OF ICE CREAM
Samples taken during the year give the following results
Grade I 29 - Satisfactory
Grade II 5 - Satisfactory
Grade III Nil - Unsatisfactory
Grade IV 1 - Unsatisfactory
Follow-up samples were obtained from the supplier whose product had given a Grade IV result.
These further samples were satisfactory.
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