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sample bottle in case. The complete outfit is sterilised and carried to the
place of sampling. Churns however must be opened before a sample can
be taken, but the amount of contamination in a still atmosphere during the
time of plunging, by organisms of the type which will grow on the prescribed
medium (agar at 37°C.) may be regarded as negligible. The sample is placed
in a refrigerator until the examination is made.
Butter.
171 samples were analysed. Of these one sample was adulterated. All
the samples were free from preservatives and prohibited dyes.
L 21. Unlabelled bulk margarine sold as butter. Vendor fined
£1 with £2 2s. 0d. costs.
Instructions were given by the Public Health Committee that samples
of Soviet butter should be examined. It was not found possible to obtain
Soviet butter from shops, as retailers did not know or would not admit the
source of supply. Two samples of authentic Russian butter were obtained
from a butter factory.
Results of analysis of these two samples and of ten other samples of
Soviet butter obtained at the docks are given under "Miscellaneous samples."
Margarine.
143 samples examined were free from preservative and prohibited dyes.
One sample was adulterated.
T 55 (Informal). Contained 17.3 per cent. of moisture. The
maximum limit of 16.0 per cent. of water allowed in imported
or factory margarine was therefore exceeded by 8.1 per cent.
A further sample purchased formally from the same vendor
was genuine.
Offences with regard to labelling were committed in three cases.
Cream.
26 samples were genuine, free from preservative and thickening substances.
The content of milk fat varied from 29.6 per cent. to 57.4 per cent.
with an average of 51.6 per cent. in 23 of the samples.
1 he remaining 3 samples consisted of 2 bottled cream having 23.4 per
cent. and 25.8 per cent. of fat respectively and 1 tinned cream (labelled "Thick
Danish Cream") containing 21.7 per cent. of fat.
Ihe average fat content of all samples was 48.3 per cent.