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5. "Pasteurised" Milk.
This is milk which has been retained at a temperature of 145 deg. F. and
not more than 150 deg. F. for at least thirty minutes, and then immediately
cooled to a temperature of not more than 55 deg. F. It must not have been
so heated more than once, and shall not be otherwise treated by heat. The
milk at any time before delivery to the consumer must not contain more than
100,000 bacteria per millilitre.
Under the terms of the 1936 Order licences in force which had been granted
before the 1st June, 1936, under the Order of 1923, continued in operation until
the 31st December, 1936, licences to sell milk as "Certified" or "Grade A
(Tuberculin Tested)" being deemed to be licences to use the designation
"Tuberculin Tested," and a licence to sell milk as "Grade A" being deemed
to be a licence to use the designation "Accredited." 4 licences to use the
designation " Pasteurised " were issued during 1936 under the new Order.
(iii) Sampling.—
(a) "Certified" Milk.—9 samples were taken for bacteriological examination
for the Ministry of Health. All were satisfactory.
(b) "Grade A (Tuberculin Tested)" Milk.—14 samples were taken, 1 of
which did not comply with the standard as regards B. Coli Content
in the case of 1 retailer.
(c) "Grade A" Milk.—3 samples were taken, all of which were satisfactory.
(d) "Grade A Pasteurised" Milk.—3 samples were taken, all of which
were satisfactory.
(e) "Pasteurised" Milk.—41 samples were taken, 1 of which did not
comply with the standard as regards Bacterial Count.
(f) Ungraded Milk.—55 samples were taken. In 6 cases, affecting 5 firms,
the retailers were communicated with owing to a high Bacterial or
B. Coli Content.
(g) Ice Cream.—54 samples were taken. In 10 cases, affecting 9 firms, the
retailers were communicated with owing to a high Bacterial or
B. Coli Content.
Samples taken of graded milk, after 1st June, 1936:—
(h) "Tuberculin Tested" Milk.—8 samples were taken, all of which
were satisfactory.
(i) "Tuberculin Tested (Pasteurised) Milk."—5 samples were taken, all
of which were satisfactory.
(j) "Tuberculin Tested (Certified) Milk."—2 samples were taken for the
Ministry of Health, both of which were satisfactory.
(iv) Tubercular Milk.—43 samples of milk were submitted to a biological
test for tuberculosis; 3 samples were found to be positive.
The following is a brief resume of the cases:—
(a) Ungraded Milk.—Sample taken from Ilford retailer on 30th January.
Supplies obtained from retailer's farm, in Ilford, having 31 cows.
2 cows were found to be tuberculous and were slaughtered.