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
Mitcham 1956
[Report of the Medical Officer of Health for Mitcham]
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29
Ice-Cream
Three premises in the Borough are registered for the manufacture
of ice-cream and 142 for the storage of ice-cream. Ninety-two visits
were paid during the year.
Eleven samples or ice-cream were taken and examined tor bacteriological purity. Four samples were also tested for fat content. The results are tabulated below:—
| Provisional Grade | ||||||
|---|---|---|---|---|---|---|
| I | II | III | IV | |||
| Coliforms absent | 10 | 1 | — | — | ||
| Coliforms present in 1/10th ml | — | — | — | — | ||
| Fæcal coli present (in addition to above) | – | – | – | – | ||
| Fat Content | ||||||
| 4 per cent. | 5 per cent. | 6 per cent. | 7 per cent. | 8 per cent. | ||
| — | — | — | — | — | ||
| 9 per cent. | 10 per cent. | 11 per cent. | 12 per cent. | 13 per cent. | ||
| 1 | 2 | – | 1 | – | ||
Bacteriological Examination of Cups and Glasses
Eighty-seven swabs were taken from tea cups at various catering
establishments and nine swabs were taken from beer glasses at
various public houses during the year, and were submitted to the
Public Health Laboratory for bacteriological examination. The
results are tabulated below:—
T ea C up S wabs.
| Colony Count (per cup) | Coliforms | Faecal Coli | Result | |||
|---|---|---|---|---|---|---|
| Satisfactory. | Unsatisfactory. | |||||
| Present. | Absent. | Present | Absent. | |||
| Under 100 | 4 | 56 | 1 | 3 | 59 | 1 |
| 100-200 | 6 | 8 | – | 6 | 10 | 4 |
| 200-500 | 3 | 3 | – | 3 | — | 6 |
| 500-1,000 | – | – | – | – | – | – |
| 1,000-1,500 | — | 1 | — | — | — | 1 |
| 1,500-2,000 | — | 1 | — | — | — | 1 |
| 2,000 and over | 4 | 1 | — | 4 | — | 5 |
| Total | 17 | 70 | 1 | 16 | 69 | 18 |