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it is divided. Where milk is sold in bottles it may be useful for this
purpose to pour the milk into a larger vessel, and then return a small
quantity to rinse out the bottle before the final mixing.
18. The bottles used for liquids should have a narrow neck and should
be filled as nearly as possible, since if the samples are shaken in transit
the use of bottles much too large for the contents may result in a
separation of some of the constituents of the liquids.
19. Such bottles should be closed with new and sound cork stoppers
fitting so tightly as to secure the contents with no aid from the wax
used for sealing. The sealing should be carried out in such a way as
to prevent any attempt to remove the cork. It is, therefore, recommended
that the cork should be slit down to a quarter of its length and
string drawn through and securely fastened round the neck, the ends
afterwards being carried to the top of the cork and sealed thereon.
20. Samples of solid fatty substances such as butter, margarine, lard
or dried milk, in which it is important that the proportions of fat and
water should be accurately estimated, should be placed without paper
(since paper acts as an absorbent) in a dry, wide-mouthed, stoppered
bottle, or earthenware jar. It is an advantage to use a screw-capped
bottle, provided with a cork-lined metal lid, having a mouth as nearly
as possible of the full width of the bottle. The sample can be placed
in such a bottle without pressure, and can be easily removed by the
Analyst.
21. All bottles should have rounded sides in order to give security to
the samples in transit.
22. The labels used should be printed in triplicate, and bear serial
numbers so as to avoid any confusion. The vendor should be given an
opportunity of verifying the identity of the labels used for the three
portions of the samples.
23. In all cases where a screw-capped bottle or any receptacle which
cannot conveniently be sealed is used it should be labelled with the
necessary particulars, and enclosed in an envelope of stout paper secured
at the ends with the Official seal. The serial number and other particulars
should be placed both on the bottle and on the envelope.
24. Where cows are milked under the supervision of the sampling
officer and a sample of the milk is taken immediately afterwards, the
part submitted to the Public Analyst should be marked "Appeal to
Cow Sample," or in some other distinctive manner to indicate the
circumstances in which it was taken.
25. When a sample of a prescribed medicine is taken, the height of
the contents in the bottle supplied by the vendor should be marked in
his presence prior to the division of the sample. The bottle so marked
should be submitted to the Analyst in order to enable him to determine
the total quantity of medicine supplied.
26. The retained portion of any perishable article should be kept at
an equable and cool temperature in a dark place.
V.—Public Analyst's Reports.
27. The Analyst is required by Statute to make Quarterly Reports,
and these should be made up to the last day of March, June, September
and December respectively.
28. The Analyst should record in his reports the results of the
examination of all samples of food and drugs sent to him for the purposes
of the Sale of Food and Drugs Acts, &c., including those taken
without the prescribed formalities and the special samples of milk
(some of which may be taken outside the area for which he is appointed)
under the Milk and Dairies (Consolidation) Act, 1915.