Section 200.10 - Inspection, sampling, and analysis1. It shall be the duty of the secretary, who may act through an authorized agent, to sample, inspect, make analysis of, and test commercial fertilizers or soil conditioners distributed within this state at time and place and to such an extent as the secretary may deem necessary, to determine whether such commercial fertilizers and soil conditioners are in compliance with the provisions of this chapter. In the performance of the foregoing duty, the secretary shall counsel with the director of the Iowa agricultural experimental station in respect to the time, place and extent of sampling. The secretary individually or through an agent is authorized to enter upon any public or private premises or conveyances during regular business hours in order to have access to commercial fertilizers or soil conditioners subject to the provisions of this chapter and the rules and regulations pertaining thereto. It shall be the duty of the secretary to maintain a laboratory with the necessary equipment and to employ such employees as may be necessary to aid in the administration and enforcement of this chapter.2.a. The methods of sampling and analysis shall be the official methods of the association of official agricultural chemists in all cases where methods have been adopted by the association.b. The findings of the state chemist or the state chemist's deputy, as shown by the sworn statement of the results of analysis of official samples of any brand and grade of commercial fertilizer, fertilizer material or soil conditioner, shall constitute prima facie evidence of their correctness in the courts of this state, as to the particular lots sampled and analyzed.3. The secretary, in determining for administrative purposes whether any commercial fertilizer is deficient in plant food, or soil conditioner deficient in guaranteed active ingredients, shall be guided by the official sample as defined in section 200.3, subsection 18, and obtained and analyzed as provided for in subsection 2 of this section.4. The results of official analysis of any commercial fertilizer or soil conditioner which has been found to be in violation of any provision of this chapter, shall be forwarded by the secretary to the registrant. Upon request, the secretary shall furnish to the registrant a portion of any sample.C46, 50, 54, § 200.7- 200.9; C58, 62, § 200.11; C66, 71, 73, 75, 77, 79, 81, §200.102009 Acts, ch 41, §263