Special factor.
CFR · 2024-01-01 · US · Title 7
A symbol or term authorized to be used with specified grades. Tobacco to which a special factor is applied may meet the general specifications but which has a peculiar side or characteristic which tends to modify the grade. (See Rules 10, 21, 22, 26, 28, 29, and 30.)
official document · source cfr-2024 · id 7:§ 29.1059