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 Port of London]
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Date. 1933. | Sample. | Result of Analysis. | Action taken. | ||||||
---|---|---|---|---|---|---|---|---|---|
Sample No. | |||||||||
1 | 2 | 3 | 4 | 5 | |||||
Oct. 24 | Water (5) Micro-organisms on Gelatin— | Samples No. 1 to 4 are of good quality. Sample No. 5 is of very poor quality. | |||||||
68°F.—3 days | 10 | 26 | 56 | 46 | 182 | ||||
Micro-organisms on Agar— | |||||||||
98°F.—2 days | 8 | 10 | 30 | 12 | 218 | ||||
Bacillus Coli | Absent from 100 c.c. | absent from | |||||||
80 c.c. | |||||||||
Coliform organisms | None. | B. Aerogenes type present in 10 c.c., not in 1 c.c. | |||||||
Other organisms | Bacillus | Welchii 100 c.c. | absent from | ||||||
Nov. 6 | Water Micro-organisms on Gelatin— | Per c.c. | No action necessary beyond recommendation as to care of hose. | ||||||
68°F.—3 days | 550 | ||||||||
Micro-organisms on Agar— 98°F.—2 days | 155 | ||||||||
Bacillus Coli Absent from | 80 c.c. | ||||||||
Coliform organisms | None. | ||||||||
Other organisms Bacillus Welchii present in | 100 c.c. | ||||||||
Bacillus Welchii absent in | 10 c.c. | ||||||||
Jan. 18 | Grape Fruit Pulp | On analysis this sample showed the presence of sulphur dioxide to the extent of 2,400 parts per million. | None. | ||||||
„ 18 | Orange Pulp | On analysis this sample showed the presence of sulphur dioxide to the extent of 2,860 parts per million. | None. | ||||||
April 3 | Grape Fruit Pulp | This sample was found to be free from the presence of preservatives. | Consignment released. | ||||||
„ 5 | Rubbed Mint | This sample was found to contain about 40 per cent of leaves foreign to genuine mint. These foreign leaves mostly had the characteristics of the Ailanthus leaf. | Consignment re-exported. | ||||||
„ 13 | Strawberry Pulp | Sample contained sulphite preservative equivalent to 415 parts of sulphur dioxide per million. | Consignment released. | ||||||
„ 13 | Apple Marrow Pulp | Sample contained sulphite preservative equivalent to 880 parts of sulphur dioxide per million. | „ | ||||||
May 12 | Sturgeon in Tomato | Sample contained tin and tin compounds equivalent to 0.53 grain of tin per pound. | |||||||
„ 17 | Yeast | Free from the presence of arsenic | |||||||
„ 17 | Yeast | Sample contained arsenic to the extent of 0.014 grain per pound. | |||||||
„ 17 | Yeast | Sample contained arsenic to the extent of 0.007 grain per pound. | |||||||
„ 19 | Crab Meat | Sample contained tin and tin compounds equivalent to 0.1 grain of tin per pound. | |||||||
„ 19 | Salmon | Sample contained tin and tin compounds equivalent to 0.2 grain of tin per pound. | |||||||
June 14 | Shelled Walnuts | This sample was found to be free from the presence of sulphur dioxide. | Consignment released. | ||||||
„ 15 | 9 tins Sardines | These samples on analysis gave the following results:— | Reported to Ministry of | ||||||
Sample No. | Lead, parts per million. | Health and Circular letter to Importers. | |||||||
1 | 14 | ||||||||
2 | 6 | ||||||||
3 | 17 | ||||||||
4 | 10 | ||||||||
5 | 26 | ||||||||
6 | 7 | ||||||||
7 | 7 | ||||||||
8 | 9 | ||||||||
9 | 12 | ||||||||
„ 29 | Ice-powder | This sample was found to contain a considerable number of dark particles, which on examination under the microscope proved to be finely ground vanilla bean. | Consignment released. | ||||||
„ 30 | Sardines | Contained lead and lead compounds equivalent to 24 parts of lead per million. | Reported to the Ministry of Health. |