View report page

Heat Treated Milk (Prescribed Tests) Order, 1944.
During the year 63 samples were taken under this Order. All
the samples conformed to the Phosphatase test but two failed
the Methylene Blue test.
Analytical Examination of Milk.
Four hundred and fifty-seven formal and five informal samples
of milk were examined by the Public Analyst. Three of the
samples were found not to conform to requirements, and legal
proceedings were taken in one instance. The following table
shows the percentage of adulteration of formal samples of milk
during the past four years.
1945
1946
1947
1948
Percentage of adulteration
0.66
0.81
0.82
0.65
Bacteriological Examination of Milk.
Seventy-one samples of designated milk were submitted to the
Bacteriologist for the Methylene Blue test (indicating the keeping
quality of the milk), including 36 taken at Institutions in the
Borough and 8 taken in the course of delivery to schools. Sixty-three
samples were submitted to the Phosphatase test (indicating
the efficiency of the method of heat treatment). The results of
these tests are shown in the following table.
Methylene Blue Test.
Phosphatase Test.
Satisfactory.
Unsatisfactory.
Satisfactory.
Unsatisfactory.
Total.
Total.
46
Pasteurised
2
48
44
44
-
Tuberculin tested pasteurised
7
-
7
-
8
8
10
Sterilised
10
10
-
10
-
Heat treated
2
2
-
1
1
-
Accredited
4
-
4
-
-
-
71
63
Totals
69
2
63
-
Examination of Milk for the Presence of Tubercle Bacilli.
Four samples of heat treated milk from bulk and five samples
of raw milk were examined by means of the animal test for the
presence of tubercle bacilli. In two instances the presence of
this bacillus was discovered. These were samples of milk obtained
from the cowhouse in the Borough to which reference is
made on page 40.