(1) It shall be the duty of the commissioner, who may act through his authorized agent, to sample and inspect, and of the state chemist to make analyses of and test commercial fertilizers distributed within this state at any time and place and to such an extent as they may deem necessary to determine whether such commercial fertilizers are in compliance with the provisions of this chapter. The commissioner, individually or through his agent, is authorized to enter upon any public or private premises or carriers during regular business hours in order to have access to commercial fertilizers subject to the provisions of this chapter and the rules and regulations pertaining thereto, and to the records relating to their distribution.

(2) In drawing any official sample and in making any analysis, the officially adopted methods and terminology of the Association of Official Analytical Chemists shall be used. In cases not covered by such officially adopted methods and terminology, the state chemist shall, as soon as practicable and from other sources deemed proper, adopt and publish appropriate methods and terminology.

(3) The state chemist and commissioner, in determining for administrative purposes whether any commercial fertilizer is deficient in plant food, shall be guided solely by the official sample as defined in paragraph (e) of Section 75-47-5, and obtained and analyzed as provided for in subsection (2) of this section.

(4) The results of official analysis of commercial fertilizers and portions of official samples shall be distributed by the state chemist as provided in the regulations.