1) UV cut glass for headlight protection
2) Waterproof and vibration resistant
3) Color temperature: 4, 300K - 12, 000K
4) 12V / 24V, 35W available
5) Lifetime: >3, 200hrs
6) Luminous flux: 3, 200LM, nearly 3 times more than halogen lamps
7) Base type: H1, H3, H4, H4 hi/low, H7, H11, 9004 (HB1), 9005 (HB3), 9006 (HB4), 9007 (HB5), D2S and D2R
8) Significantly lower power consumption and high light efficiency
The lamp is usually mounted vertically, with the cathode below the anode. The light emitted by this lamp is concentrated in a donut-like shape around the plane perpendicular to the electrodes. The light distribution is asymmetrical: more light is emitted around the cathode than the anode. Roughly, the light extends in the lower plane of about 70° and in the upper plane about 50°. A lens (condenser) is placed in front of the lamp for the collection of light. Usually, a mirror is placed in the back to increase the amount of the light collected and directed forward: the use of the rear reflector increases the total collected light by about 60%. Based on the calculations the total collected light from this lamp is around 30-32%.

When selecting a lamp as an excitation source for spectroscopic studies, the overall power produced by the lamp should not be the only parameter that is used for comparison of its effectiveness as an excitation source. Certainly, it is expected that a 450W lamp emits more light than e.g. a 300W lamp but this number alone does not guarantee that more light is available for exciting a sample. There are other factors such as the optics and geometry that play a role, but we will focus our attention only to the light source for now. Indeed, we will show that the 300W Cermax lamp mounted on ISS Spectrofluorometers provides more usable intensity than the traditional 450W Xenon lamp mounted on other spectrofluorometers.