ConstantColor™ CMH Tubular Clear

ConstantColor™ CMH lamps combine the HPS technology (providing stability, efficiency & uniformity) and the Metal Halide Technology (providing bright white quality light) to produce highly efficient light sources with good colour rendering and consistent colour performance through life. This is achieved by using the ceramic arc tube material from the Lucalox™ lamp, which minimises the chemical changes inside the lamp through life. When combined with the halide doses used in Arcstream™ Metal Halide lamps then the quality and stability of the dose maintains the colour consistency. Hence the name ConstantColor™ CMH.

Metal halide lamps, traditionally made with quartz arc tubes, are prone to colour shift through life and lampto-lamp colour variation. Some of the dose, e.g. sodium, (an important component of metal halide lamps), can migrate through quartz to cause colour shift and loss of light through life. The ceramic arc tube resists this material loss, can be manufactured to tighter tolerances and withstands a higher temperature to provide a more constant colour.


Product code Description Wattage
Lumen [lm] Base
6917 38752 CMH70/TT/UVC/830/E27 70 6400 E27
6904 92478 CMH100/TT/UVC/830/E40 100 9200 E40
6906 38749 CMH150/TT/UVC/830/E40 150 14000 E40
6907 21517 CMH150/UVC O/T/U/942/E40 150 13200 E40
73035 21514 CMH150/UVC/T/U/942/E40 150 14500 E40
74145 21516 CMH150/UVC O/T/U/830/E40 150 14500 E40
6909 10589 CMH250/T/U/830/E40 250 25000 E40
73202 62356 CMH250/T/U/942/E40 250 25000 E40
74198 20302 KRC250/CMH/830/T/H/E40 250 20000 E40
1131 13067 CMH400/TT/UVC/U/830/E40 400 41000 E40