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
Kensington 1936
[Report of the Medical Officer of Health for Kensington Borough]
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51
Pasteurised.—This designation is applicable where Accredited milk or ungraded milk
is pasteurised in accordance with the requirements of the order. The conditions imposed are the
same as in the order of 1923, except that there are additional requirements with regard to
thermometers and temperature records. During pasteurisation the milk must be retained at a
temperature of 145-150 degrees Fahrenheit for a period of at least 30 minutes.
The new order provided that licences granted before the 1st June, 1936, under the revoked
order should continue in operation until the end of the year, a licence to sell milk as Certified or
Grade A (Tuberculin Tested) being deemed to be a licence to use the designation Tuberculin Tested,
and a licence to sell milk as Grade A beiner deemed to be one to use the designation Accredited.
The licences granted in 1936 were as follows :—
| (a) Dealers' licence to sell Certified milk | 13 | 1 |
| 2 | — | |
| (c) Dealers' licence to sell Grade A (T.T.) milk | 16 | 1 |
| 1 | — | |
| 1 | — | |
| 46 | 7 |
* These licences enable the holders to sell graded milks in Kensington from premises situated outside
the borough.
During the year, 11 samples of Certified milk, five of Grade A (Tuberculin Tested) milk, and thirty-eight of Pasteurised milk were taken for the purpose of ascertaining whether they complied with the bacteriological standards laid down in the Milk (Special Designations) Order, 1923, which are as follows:—
| Special grade of milk. | Maximum number of bacteria permitted per c.c | Standard for bacillus coli. |
|---|---|---|
| Certified milk | 30,000 | Must not be found in one-tenth c.c. |
| Grade A (Tuberculin Tested) milk | 200,000 | Must not be found in one-hundredth c.c. |
| Pasteurised milk | 100,000 | No standard prescribed. |
The results of the examinations are shown in the following tables:—
| Sample collected on | Bacteria per1 c.c. | Coli per l/10th c.c. | Sample collected on | Bacteria per 1 c.c. | Coli per l/10th c.c. |
|---|---|---|---|---|---|
| 26th March | 98,000 | Nil. | 14th July | 5,500 | Nil. |
| „ „ | 10,800 | „ | 4th August | 3,450 | „ |
| 28th April | 1,080 | „ | 11th „ | 410 | „ |
| 14th July | 11,200 | „ | „ „ | 74,000 | „ |
| „ „ | 3,200 | „ | 18th „ | 6,200 | „ |
| „ „ | 6,200 | „ | „ |
The above results, except that marked with an asterisk, were forwarded to the Minister of Health, at whose request the samples were taken.
| Sample collected on | Bacteria per 1 c.c. | Coli per l/100th c.c. | Sample collected on | Bacteria per 1 c.c. | Coli per l/100th c.c. |
|---|---|---|---|---|---|
| 27th February | 14,100 | Nil. | 12th August | 546,000 | Present. |
| 3rd March | 9,600 | „, | „ „ | 3,600 | „ |
| 14th July | 13,900 | „ | |||
| Sample collected on | Bacteria per 1 c.c. | Sample collected on | Bacteria per 1 c.c. | ||
| 18th February | 13,600 | 4th August | 59,000 | ||
| 3rd March | 3,300 | 12th | 8,800 | ||
| „ „ | 1,440 | 12th | 1,700 | ||
| „ „ | 8,400 | 8th September | 2,600 | ||
| „ „ | 1,600 | „ „ | 4,800 | ||
| 26th | 32,000 | „ „ | 72,600 | ||
| „ „ | 44,000 | „ „ | 4,280,000 | ||
| 28th April | 12,500 | „ „ | 3,000 | ||
| 25,000 | 15th | 12,100 | |||
| 30th June | 990 | „ „ | 66,000 | ||
| „ „ | 1,610 | „ „ | 16,100 | ||
| „ „ | 2,700 | 21st October | 5,400 | ||
| „ „ | 2,500 | „ „ | 4,600 | ||
| 15th July | 9,600 | „ „ | 6,600 | ||
| 6,506 | 5th December | 710 | |||
| „ „ | 95,000 | „ „ | 860 | ||
| „ „ | 3,400 | „ „ | 560 | ||
| „ „ | 1,010 | „ „ | 890 | ||
| 4th August | 17,000 | „ „ | 950 | ||