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114
BACTERIOLOGICAL SAMPLES OF MILK
Samples of designated milks were taken and submitted for
examination with the following results:-
Satisfied Failed
Phosphatase Test 72
Methylene Blue Test 150 10
Turbidity Test 3
*Ring Test 102 1
VOID TESTS-48 i.e. Atmospheric (shade) temperature at
Laboratory prevented carrying out of tests.
The tests shown in the above table were applied for the
following purposes:-
Phosphatase Tests-Applied to "Pasteurised" Milk to
determine that the milk was satisfactorily pasteurised.
Methylene Blue Tests-Applied to "Untreated" and
"Pasteurised" milks to indicate that the bacterial
content was within the prescribed standard.
Turbidity Tests-Applied to "Sterilised Milk" to determine
that the milk was satisfactorily sterilised.
Ring Test-Applied to untreated milk to determine the
presence of "Brucellus abortus".
Where samples failed to satisfy the prescribed tests investigations
were undertaken and further samples obtained, the tests of
which proved to be satisfactory.
*In the case of one Ring Test failure the reacting cow was
detected and removed. Repeat samples from the remainder of the
herd proved negative. The Animal Health Division of the Ministry
of Agriculture, Fisheries and Food was informed at all stages of
the investigation.
BACTERIOLOGICAL SAMPLES OF ICE CREAM

Further samples were obtained from the suppliers whose
products had given Grade III or Grade IV results. These further
samples were found to be satisfactory and were classified as
Grade I