(a) Each sample taken shall be sealed with a label placed on the container of the sample showing:
(1) the serial number of the sample;
(2) the date on which the sample was taken; and
(3) the signature of the person who took the sample.
(b) Each sample shall be sent to the service. In addition, a report shall be sent to the service stating:
(1) the name or brand of commercial fertilizer sampled;
(2) the serial number of the sample;
(3) the manufacturer or guarantor of the sample, if known;
(4) the name of the person in possession of the lot samples;
(5) the date and place of taking the sample; and
(6) the name of the person who took the sample.
(c) For the purpose of properly identifying a sample with the lot sampled, the service is entitled to examine and copy any invoice, transportation record, or other record pertaining to the lot.