678 LAWS OF MARYLAND. [CH. 403-

512. It shall be unlawful for any person who is subject to
the provisions of Section 509 of this sub-title to take, collect
or use for testing purposes any unfair sample or to make the
Babcock reading of any sample the fat of which is not at a
temperature between one hundred and thirty-five degree®
(135°) and one hundred and forty degrees (140°) Fahrenheit,,
or to under-read, over-read or erroneously manipulate the test
used for determining the percentage of butter fat in any milk
or cream so purchased or received, or to falsify any part of
the record of any such test. In all tests of cream, the quantity
used in the test bottle shall be either nine (9) or eighteen
(18) grams by weight, not measure, and the test shall be read
with the aid of an approved meniscus remover.

513. Every person who is subject to the provisions of Sec-
tion 509 of this sub-title who purchases or receives milk on
the basis of its weight shall have such weight ascertained by
a person duly licensed as weigher by the University of Mary-
land, and every such person who purchases or receives milk
or cream on the basis of its butter fat content shall have
such content ascertained and the samples used for such
ascertainment drawn by a person duly licensed as sampler
by said University. Immediately after the milk and/or cream
shall be so weighed or tested, a record thereof shall be made
in ink or with indelible pencil by the licensed weigher or
tester who weighed or tested the same. Such record shall
show the name of the producer, or his number where he is
identified by number, in a manner satisfactory to said Uni-
versity, the location of the farm on which the milk and/or
cream was produced, the marks by which the samples thereof
may be identified, the weight, where the milk was purchased
or received on the basis of its weight, and the butter fat con-
tent where the milk and/or cream were purchased or received
on the basis of such content. All such records shall bear the
date when such milk was weighed or such milk and/or cream
was tested and the license number and signature of the
weigher or tester who weighed or tested such milk and/or
cream, and, together with evidence of payment for such milk
and/or cream on the basis of such records, shall be kept for
at least twelve (12) calendar months from the date thereof
at the place where the milk or cream recorded thereon was
received, and during such period shall be open to inspection at
all reasonable times by the University of Maryland, and at
the request of any person who produced any milk or cream
shown upon any such record, that portion of the record which
relates to the milk or cream produced by such person shall
be open to the inspection of that person at any and all
reasonable times.