ANSI C78.376

Description / Abstract: This standard covers the objectives and tolerances for the chromaticity of fluorescent lamps at their normal 100 hour rating point. The colors included are 2700K, 3000 K/warm white, 3500K/white, 4000K/4100K/cool white, 5000K, and 6500K/daylight. The lamp under test shall be operated under reference conditions as specified in ANSI C78.375, Guide for Operation of Fluorescent Lamps, and in the relevant C78 lamp standard. For lamps with non-standardized chromaticity coordinates, the rated x and y values shall be assigned by the manufacturer or responsible vendor.