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VM-5S Halogen Moisture Meter works for the injection of iodine or bromine and other
halogen gas in the bulb, at high temperature, the sublimation of tungsten and halogen
chemical action, sublimation of tungsten on tungsten will re-solidify to form a balanced
cycle, to avoid premature rupture of tungsten. Therefore live longer than incandescent
halogen bulbs. And because the filament can work at higher temperatures, resulting in a
higher brightness, higher color temperature and higher luminous efficiency.