Missouri Revised Statutes Title IV. Executive Branch § 34.175. Soybean-based ink to be used for state printing, when--logo requirement--effective when

1. Notwithstanding the provisions of sections 34.170 to 34.192 to the contrary, all printing done by any department, agency, or institution or entity of the state, whether performed internally or contracted for, shall use soybean-based inks, so long as the cost of using such inks is no more than ten percent greater than the cost of other comparable inks. The commissioner of administration shall specify on any contract for printing let out for competitive bids whether the printing is required to be done with soybean-based inks.

2. Where it is cost-efficient and practicable, any document which has been printed with soybean-based inks shall contain somewhere on the document the official “soybean-based ink” logo.