Starlac Industries offers Spectrum Tubes, EE-689. Starlac Industries is an ISO 9001: 2000 certified manufacturer and exporter of scientific instruments. These Spectrum Tubes are straight tubes. These are offered in two sizes and in 20cm and 26cm length. These Spectrum Tubes are provided with Helium, Argon, Hydrogen, Neon, Oxygen, Iodine Vapour, Alcohol vapours, Nitrogen, Carbon Monoxide, Carbon dioxide, Chlorine, Deuterium, Krypton, Sulphur, Xenon and Bromine. The Spectrum Tubes are used to observe the typical spectrum of the gas filled inside the tube.