8539.32.10 | 00 | Electric filament or discharge lamps, including sealed beam lamp units and ultra-violet or infra-red lamps; arc-lamps. - Discharge lamps, other than ultra-violet lamps: - Mercury or sodium vapour lamps; metal halide lamps - For use in measuring, checking or testing instruments of Chapter 90, or for use in electrically operated apparatus for indicating intervals of time;High pressure (190-200 atmospheres), 100W to 300W mercury discharge lamps with arc gaps from 1.0mm to 1.3mm, mounted within a parabolic or elliptical dichroic glass reflector, and with a luminious efficiency of 60 (+/- 5) lumens per watt, for use in Canadian manufactures | NMB | Free | CCCT, LDCT |