[Report 1930] / Medical Officer of Health, Darlington County Borough.
- Darlington (England). County Borough Council.
- Date:
- 1930
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: [Report 1930] / Medical Officer of Health, Darlington County Borough. Source: Wellcome Collection.
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![Some samples taken reached as high a standard as 9-01% , N.F.S., 4-95% Fat and 8-55% N.F.S. and 6*95% Fat, while the lowest included samples of 9-07% N.F.S., 2-50% Fat, 8*90%,I N.F.S., 2-25% Fat. ' i MILK (Special Designations) ORDER, 1923. The Special Designations under which Milk may be sold ini jinrsnance of this Order are:—“ Certified,” “ Grade A (Tnberculim Tested),” “ Grade A ” and “ Pasteurized.” During the year 2 Licenses for the sale of Pasteurized Milk,;, one License for Grade “ A ” Milk, and one License for Grade' “ A ” (Tuberculin Tested) Milk were granted. One License for- Pasteurised Milk and one License for Grade “A” Milk werei discontinued, so that there remain one License for Pasteurised! and one License for Grade “A” (Tuberculin Tested) Milk in:j operation. | Of 13 samples of Pasteurized and 2 samples of Grade “ A ’ I Milk taken for Bacteriological Examination, 12 of Pasteurizec K and 2 of Grade “ A ” Milk were of genuine quality. One samplo of Pasteurized Milk did not comply with the requirements of the abov-e Order, and a further samjile was taken and found satis- factory. Details of Bacteriological Examinations of above samples. Date of taking Sample. No. of Sample. Identi- fication. No. of organisms ])er c.c. 48 Hours’ Incubation. 15-1-30 ... 1 B 1,600, Age of Sample. 74 to 22 hours ... 2 A 1,800 i 55 10-8-30 ... 3 A 1,200, 24 »? • • • 4 B 24,000, 17 2-4-30 ... 5 B 4,000, 6 to 20 5 > ... 6 A 3,800, 6 to 20 ,, 7-5-30 ... 7 B 4,100, 5 5 5 5 J5 ... 8 A 1,000, 55 55 19-5-30 ... 9 C 1,165, H 23-6-30 ... 10 C 850, 4i ,, >5 11 B 28,900, not known 5) ... 12 A 750, 55 29-7-30 ... 13 B 172,900 55 55 ... 14 A 1,570 55 5-8-30 ... 15 B 30,000 55 Presence or absence of Coliform Bacilli in each of 3 tubes. Designaa Positive in 2 tubes in l/l,000th c.c.... Pasteur 5 5 5 5 1/lOOth c.c. 55 • Negative in 3 tubes in 1/lOth c.c. ... ■ Positive in 3 tubes in 1/100th c.c. ... 55* • •> 55 “ 55 1/lOOth c.c. ... >> 1 5 5 5 5 1/lOth c.c. ’'1 55 55 55 1/lOOth c.c ... 55 55 ;> 1/lOth c.c. 55 55 55 55 1/lOth c.c. Grade./ 55 55 55 1/lOth c.c. 55 55 55 55 l/l,000th C.C.... Pasteu! 55 1 55 1/1 Oth C.C. 55: 3 l/l,000th C.C.... 1?' ,, ' 1/lOth C.C. >• 55 55 51 1/1,000th C.O.... 5 ■v 1](https://iiif.wellcomecollection.org/image/b29149125_0100.jp2/full/800%2C/0/default.jpg)
