London's Pulse: Medical Officer of Health reports 1848-1972

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Sutton and Cheam 1959

[Report of the Medical Officer of Health for Sutton and Cheam]

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contained satisfactory averages of 3.55% milk fat and 8.63% milk,
solids other than milk fat.
The results were well above the minimum standard of 4* milk
fat laid down in The Milk and Dairies (Channel Islands and South
Devon Milk) Regulations 1956: and of 3% milk fat and 8.5% milk
solids other than milk fat required under The Sale of Milk
Regulations 1939.
CREAM
Analysis of the eight informal samples of cream showed the
one double cream sample to contain 49.2% milk fat and the seven
single cream samples a satisfactory average of 23.1% milk fat.
The minimum standards in relation to cream are as follows:'double
cream' not less than 48% by weight of milk fat; and 'other
creams' described as single cream, pouring cream, coffee cream,
fruit cream, or as any other description of cream - not less than
18% by weight of milk fat.

BACTERIOLOGICAL EXAMINATION OF MILK SAMPLES

One hundred and sixteen samples of milk were examined as follows:-

Class of MilkNumber of samples examinedType of Test appliedResults
PassedFailed
Pasteurised73Phosphatase73-
Methylene Blue73-
Sterilised8Turbidity8-
Tuberculin Tested Pasteurised12Phosphatase12-
Methylene Blue12-
Tuberculin Tested (Farm Bottled)23Methylene Blue203
TOTALS1161133

To comply with the Milk (Special Designation) (Raw Milk)
Regulations, Tuberculin Tested Milk must not decolourise Methylene
Blue within 4½ hours if the sample is taken during 1st of May to
31st October, or within 5½ hours if taken between the 1st November
and 30th April.
Of the total samples examined under these Regulations three
samples of Tuberculin Tested (Farm Bottled) Milk failed to pass
the prescribed test. These samples were taken during the 4½ hours
test period and decolourised Methylene Blue in 3 hours, 1 hour and
1½ hours respectively.
It is the practise immediately to notify failures of farm
bottled milk to the dairy company concerned so that the matter
may be taken up with the responsible producers as speedily as
possible.
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