Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Enfield]
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TABLE 36
FOOD AND DRUGS
Bacteriological Examination of Ice-Cream Methylene Blue Test
Vendor | Type of Ice-Cream | Results | ||||
---|---|---|---|---|---|---|
Grade | ||||||
1 | 2 | 3 | 4 | |||
Shop Premises | Loose or soft | 13 | 7 | — | — | |
Mobile Traders | Loose or soft | 4 |
TABLE 37
FOOD AND DRUGS
Bacteriological Examination of Milk
1. | Methylene Blue Test (for keeping quality) | ||||
---|---|---|---|---|---|
Designation | Number of Samples | Results | |||
Satisfactory | Void | Unsatisfactory | |||
Pasteurised | 170 | 158 (92.94%) | 11 (6.47%) | 1 (0.59%) | |
2. | |||||
Pasteurised | 170 | 170 (100%) | — | — | |
3. | |||||
Sterilised | 90 | 90 (100%) | — | — | |
4. | |||||
Ultra heat treated | 8 | 7 | — | 1 (12.5%) |