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Cap / Base
Cap / Base Type
Part Codesof alternative stock identifiers
HQI-T Osram Powerstar 250 watt W/N/SIfrom Leading Brand (Model: HQIT250W/N/SI)
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Metal Halide bulbs are a hybrid of Mercury and Sodium light bulbs. These light bulbs may also contain halides of metals including scandium, indium and dysprosium.
Operating Position/Burn Position
Some lamps are position orientated and have been designed to operate at a certain position. As a result their ratings for these types of lamps have been based on operation in this position.
Burning position orientated lamps in a position different than intended can seriously hamper lamp life, lumen output and colour.