7 C.F.R. § 29.1167
This group consists of tobacco from three or more groups or two distinctly different groups which are mixed together in various combinations.
Grades, Grade Names, Minimum Specifications, and Tolerances
M4F-Fair Quality Mixed Groups
Ripe, firm leaf structure, heavy, lean in oil. Injury tolerance 30 percent, of which not over 10 percent may be waste.
M5F-Low Quality Mixed Groups
Ripe, firm leaf structure, heavy, lean in oil. Injury tolerance 40 percent, of which not over 20 percent may be waste.
M4KR-Fair Quality Variegated Red or Scorched Mixed Groups
Ripe, firm leaf structure, fleshy, lean in oil. Injury tolerance 30 percent, of which not over 10 percent may be waste.
M4KM-Fair Quality Variegated Mixed Groups
Unripe, close leaf structure, heavy. Injury tolerance 30 percent, of which not over 10 percent may be waste.
M5KM-Low Quality Variegated Mixed Groups
Unripe, tight leaf structure, heavy. Injury tolerance 40 percent, of which not over 20 percent may be waste.
M4GK-Fair Quality Green Variegated Mixed Groups
Immature, close leaf structure, heavy. Injury tolerance 30 percent, of which not over 10 percent may be waste.
M5GK-Low Quality Green Variegated Mixed Groups
Immature, tight leaf structure, heavy. Injury tolerance, 40 percent, of which not over 20 percent may be waste.
7 C.F.R. §29.1167