Fluorescence percentages in ryegrasses.
CFR · 2024-01-01 · US · Title 7
Tolerances for 400-seed fluorescence tests shall be those set forth in the following table plus one-half the regular pure-seed tolerance determined in accordance with § 201.60. When only 200 seeds of a component in a mixture are tested, an additional 2 percent shall be added to the fluorescence tolerance.
official document · source cfr-2024 · id 7:§ 201.61