The Secretary of Agriculture is authorized to establish from time to time standards for the classification of cotton by which its quality or value may be judged or determined for commercial purposes which shall be known as the official cotton standards of the United States. Any such standard or change or replacement thereof shall become effective only on and after a date specified in the order of the Secretary of Agriculture establishing the same, which date shall be not less than one year after the date of such order: Provided, That the official cotton standards established, effective August 1, 1923, under the United States Cotton Futures Act shall be at the same time the official cotton standards for the purpose of this chapter unless and until changed or replaced under this chapter. Whenever any standard or change or replacement thereof shall become effective under this chapter, it shall also, when so specified in the order of the Secretary of Agriculture, become effective for the purposes of the United States Cotton Futures Act and supersede any inconsistent standard established under said Act. Whenever the official cotton standards of the United States established under this chapter shall be represented by practical forms the Department of Agriculture shall furnish copies thereof, upon request, to any person, and the cost thereof, as determined by the Secretary of Agriculture, shall be paid by the person making the request. The Secretary of Agriculture may cause such copies to be certified under the seal of the Department of Agriculture and may attach such conditions to the purchase and use thereof, including provision for the inspection, condemnation, and exchange thereof by duly authorized representatives of the Department of Agriculture as he may find to be necessary to the proper application of the official cotton standards of the United States.