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 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 | 140 | — |
Methylene Blue Test | 163 | 8 |
Ring Test | 67 | — |
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 to be satisfactory.
BACTERIOLOGICAL SAMPLES OF ICE CREAM
Samples taken during the year give the following results: —
Grade I — 66—Satisfactory
Grade II — 8—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.