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

Enfield 1967

[Report of the Medical Officer of Health for Enfield]

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TABLE 38
FOOD AND DRUGS
Bacteriological Examination of Ice-cream
Methylene Blue Test
Vendor
Type of Ice Cream
Results
1
Grade
4
2
3
Shop Premises
Loose or Soft
6
6
5
6
Mobile Traders
Loose or Soft
4
2
4
—

Table: TABLE 39FOOD AND DRUGSBacteriological Examination of Milk

TABLE 39

FOOD AND DRUGS

Bacteriological Examination of Milk

1. Methylene Blue Test (for keeping quality)
DesignationNumber of SamplesSatisfactoryResults VoidUnsatisfactory
Pasteurised160147 (91-88%)8 (5%)5 (3-12%)
2. Phosphatase Test (for efficiency of pasteurisation)
DesignationNumber of SamplesSatisfactoryResults VoidUnsatisfactory
Pasteurised160160 (100%)——
3. Turbidity Test (for efficiency of sterilisation)
DesignationNumber of SamplesSatisfactoryResults VoidUnsatisfactory
Sterilised6767 (100%)——
4. Colony Count (for efficiency of treatment)
DesignationNumber of SamplesSatisfactoryResults VoidUnsatisfactory
Ultra Heat T reated1313 (100%)——