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

View report page

Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London

Enfield 1968

[Report of the Medical Officer of Health for Enfield]

This page requires JavaScript

Text

Copy text to clipboard

TABLE 36

Table: FOOD AND DRUGS Bacteriological Examination of Ice-CreamMethylene Blue Test

FOOD AND DRUGS Bacteriological Examination of Ice-Cream

Methylene Blue Test

VendorType of Ice CreamResults
Grade
1234
Shop PremisesLoose or Soft141585
Mobile TradersLoose or Soft7222

Table: TABLE 37FOOD AND DRUGS Bacteriological Examination of Milk1. Methylene Blue Test (for keeping quality)

TABLE 37

FOOD AND DRUGS Bacteriological Examination of Milk

1. Methylene Blue Test (for keeping quality)

DesignationNumber of SamplesResults
SatisfactoryVoidUnsatisfactory
Pasteurised198176 (88.9%)14 (7.1%)8 (4%)
2. Phosphatase Test (for efficiency of pasteurisation)
DesignationNumber of SamplesResults
SatisfactoryVoidUnsatisfactory
Pasteurised198189 (95.5%)9 (4.5%)—
3. Turbidity Test (for efficiency of sterilisation)
DesignationNumber of SamplesResults
SatisfactoryVoidUnsatisfactory
Sterilised5252 (100%)——
4. Colony Count (for efficiency of treatment)
DesignationNumber of SamplesResults
SatisfactoryVoidUnsatisfactory
Ultra Heat Treated99 (100%)——