Report sample color as standard glass with matching color, for
example: "7.5 ASTM Color.”
• If color of sample is intermediate between two standard
glasses, record the darker preceded by the letter "L," for
example: "L7.5 ASTM Color.”
• Never report color as being darker than a given standard,
except those darker than the 8th color on the colorometer
reading, for example "D8 ASTM Color.”
• If sample has been diluted with kerosene, report color of
mixture followed by abbreviation "Dil," for example: "L7.5 Dil
ASTM Color.