Color values.

37-02-01-03. Color values. The spectrophotometric color values of the yellow-orange fluorescent material shall have a dominant wave length of five hundred ninety to six hundred ten millimicrons and a purity of ninety-eight percent before test. After the durability test under section 37-02-01-08, the dominant wave length of the fluorescent material shall not change more than ten percent. General Authority: NDCC 39-21-50 Law Implemented: NDCC 39-21-50