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
Ilford 1930
[Report of the Medical Officer of Health for Ilford]
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51
(Tuberculin Tested)" milk, 6; and "Pasteurised" milk, 4.
These are licences granted to firms who already have a licence from
another Authority, the milk being bottled outside the town, but
sold in Ilford.
3. Milk Sampling.—10 samples of "Grade A (Tuberculin
Tested)," 4 samples of "Grade A," 2 samples of "Grade A
Pasteurised," 24 samples of "Pasteurised" milk, and 65 samples
of ordinary milk were taken.
The standard for "Grade A (Tuberculin Tested)" and "Grade A" milk
is that a sample shall be found to contain (a) not more than 200,000 bacteria
per cubic centimetre ; and (b) no coliform bacillus in one-hundredth of a cubic
centimetre.
The following table shows the result of the analyses of the samples of "Grade A (Tuberculin Tested)" and "Grade A" milk:-
| "Grade A (Tuberculin Tested)." | "Grade A." | ||
|---|---|---|---|
| Sample No. | No. of Bacteria per c.c. | Sample No. | No. of Bacteria per c.c. |
| 11 | 923 | 2 | 2,046 |
| 12 | 2,853 | 3 | 930 |
| 20 | 687,000 | 80 | 98,500 |
| 35 | 1,596 | 88 | 1,653 |
| 36 | 3,850 | - | - |
| 41 | 3,750 | - | - |
| 56 | 195 | - | |
| 57 | 6,593 | - | - |
| 81 | 9,916 | - | |
| 98 | 6,730 | - | - |
The standard for "Grade A Milk Pasteurised" is that a sample shall be
found to contain (a) not more than 30,000 bacteria per cubic centimetre; and
(b) no coliform bacillus in one-tenth of a cubic centimetre.
Two samples of this grade of milk (Nos. 1 and 78) were taken, the number
of bacteria being 95 and 8,723 respectively.
The standard for "Pasteurised" milk is that a sample shall be found to
contain not more than 100,000 bacteria per cubic centimetre.