I bought a spectrophotometer and was fooled by the dealer using these two lights. Make up for the missed classes and deceive the dealers. During the learning process, I discovered:

Many spectroscopic analysis instruments use xenon lamps to provide energy in the ultraviolet and visible light regions, replacing the dual lamp combination of deuterium and tungsten lamps. This theoretically reduces one lamp, one reflective lens, and one servo motor;

From the perspective of technical indicators, there is still a significant difference between the two;

(1) Spectral band index:

Deuterium lamp: commonly used 180-350nm;

Tungsten halogen lamp: commonly used 350-2000nm;

Xenon lamp: commonly used 250-700nm;

The commonly used UV visible analysis range is 190-1100nm;

(2) Voltage

The power of the xenon lamp is 150 watts; The starting power of the deuterium lamp is 100 watts, some say 300 watts, and the working power is 35 watts;

(3) Lifespan

Deuterium lamp: preheating is required for use, and the manufacturer generally guarantees 500 hours. The actual service life is 1000-2000 hours;

Xenon lamp: As a cold light source, it does not require preheating for use, and its actual service life is about 4000-5000 hours. Our equipment has been used for 5 years without any damage. However, there is evidence that the strong ultraviolet radiation from xenon lamps can cause rapid aging of the light path in the light chamber over time.