Spectrum Tube Power Supply is used to lighten up the Spectrum Analyses Tubes (Sold Separately) through its electrodes. Studying these spectra and understanding the basic science behind it is a fundamental principle taught from middle school physical science, to high school chemistry and physics, to college level chemistry, physics, and quantum mechanics. Students will be engaged with curiosity as they begin to witness and understand the discrete quantitative energy levels seen by the spectra emitted by exciting gas tubes in the power supply. Pure Gases Available in Spectrum Tubes: (Check our items for sale for the same) Carbon Dioxide Nitrogen Oxygen Neon Argon Chlorine Bromine Iodine Sulphur/Sulfur Helium Krypton Xenon Mercury Vapor Alcohol Vapor Water Vapor Ethyl Ethylene Sodium Deuterium Air Ammonia Cadmium Hydrogen Our power supply is very safe and reliable. It is manufactured keeping the high standards in mind. We suggest you to take a look on our spectrum tubes as well. Both Spectrum tube power supply and spectrum tubes are manufactured keeping the same high standards in mind and are Suggested to be used together because of compatibility.