51.2282—Tolerances for color.

(a) All percentages shall be calculated on the basis of weight.
(b) In order to allow for variations incident to proper grading and handling, tolerances shall be permitted for the respective color classifications as indicated in Table II:
Table II
Color classification Tolerances for color
Darker than extra light 1 Darker than light 1 Darker than light amber 1 Darker than amber 1
Extra light 15 percent 2 percent (included in 15 percent darker than extra light)
Light 15 percent 2 percent (included in 15 percent darker than light)
Light amber 15 percent 2 percent (included in 15 percent darker than light amber).
Amber 10 percent.
1 See illustration of this term on color chart.