Detection of captan, mercury, or thiram on seed.
CFR · 2024-01-01 · US · Title 7
The bioassay method may be used according to the procedure given in Association of Official Seed Analysts, Handbook No. 26, “Microbiological Assay of Fungicide-treated Seeds”, May 1964.
official document · source cfr-2024 · id 7:§ 201.58c