Cal. Health and Safety Code § 109020

For purposes of this chapter, the following definitions apply: (a) “Compact fluorescent lamp” means a compact low-pressure, mercury-containing, electric-discharge light source in which a fluorescent coating transforms some of the ultraviolet energy generated by the mercury discharge into visible light, and includes all of the following characteristics: (1) One base (end cap) of any type, including, but not limited to, screw, bayonet, two pins, and four pins. (2) Integrally ballasted or non-integrally ballasted. (3) Light emission between a correlated color temperature of 1700K and 24000K and a Duv of +0.024 and -0.024 in the International Commission on Illumination (CIE) Uniform Color Space (CAM02-UCS). (4) All tube diameters and all tube lengths. (5) All lamp sizes and shapes for directional and nondirectional installations, including, but not limited to, PL, spiral, twin tube, triple twin, 2D, U-bend, and circular. (b) “Linear fluorescent lamp” means a low-pressure, mercury-containing, electric-discharge light source in which a fluorescent coating transforms some of the ultraviolet energy generated by the mercury discharge into visible light, and includes all of the following characteristics: (1) Two bases (end caps) of any type, including, but not limited to, single-pin, two-pin, and recessed double contact. (2) Light emission between a correlated color temperature of 1700K and 24000K and a Duv of +0.024 and -0.024 in the CIE CAM02-UCS. (3) All tube diameters, including, but not limited to, T5, T8, T10, and T12. (4) All tube lengths from 0.5 to 8.0 feet, inclusive. (5) All lamp shapes, including, but not limited to, linear, U-bend, and circular.