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All the samples of pasteurised milk passed the phosphatase test
which indicates that the milk has been properly pasteurised. The
methylene blue test is a measure of the bacteriological condition of
the milk and in accordance with the standard set by the Milk (Special
Designations) Regulations I960, this test is void if the atmospheric
shade temperature exceeds 70°F. during the period of the test. Pour
pasteurised samples failed this test.
The three samples of tuberculin tested milk which failed the test
were from a vending machine. Appropriate follow-up action was taken
and it is hoped that trouble from this source will not recur,
(d) Ice C ream.
The number of registered premises in the Borough in which ice cream
may be stored or from which it may be sold is 173. This figure also
includes four producers. In addition to these dealers and producers,
there are other premises, such as restaurants, canteens, cinemas, etc,
where ice cream is sold. These premises are not required to be
registered. By far the greater part of the ice cream sold in the town
is obtained from manufacturers whose premises are situate outside the
Borough, More than ever the production of ice cream is being confined
to the few large manufacturers.
The following table shows the results of examinations in respect
of 84 samples submitted to the Ministry of Health Public Health
Laboratory at Epsom during 1963. Owing to the numerous factors governing
the hygienic quality of ice cream, undue attention is not paid to
the bacteriological results on any single sample. Those which are
placed within Grades I and II are considered to be satisfactory, and
those within Grades III and IV not so. Adequate follow-up action is
taken where samples fall within the latter grades.