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ANALYSIS OF MILK
During the year under review 73 samples of milk were submitted to
the public analyst by the Council's inspectors none of which was
deficient in milk solids.
ICE-CREAM
GRADING
Ice-cream is submitted to the Public Health Laboratory for
bacteriological examination. The ice-cream is graded according to
the tine taken to decolorise a dye, methylene blue. The test is a
provisional one and because of the many factors which govern the
hygienic quality of ice-cream it is recommended officially that
judgement should be based on a series of samples and that too much
attention should not be paid to the result of an individual sample.
It is suggested that over a six-monthly period, at least 50 per cent
of a vendor's samples should fall into grade I, 80 per cent into
grades I or II, not more than 20 per cent in grade III and none
into grade IV.

In general, grades I and II are satisfactory, while grades III
and IV may indicate some defects in manufacture, handling or storage,
Such cases are followed up and advice given.