8pcs Luminescent Rare Gas Tube Hydrogen Nitrogen Oxygen Helium Neon Argon Krypton Xenon

99.999% high-purity rare gas tube sample.
Size: 10*40mm, 14*60mm, 20 * 100mm.
Package includes: 8pcs gas glass tube （ helium, neon, argon, krypton, xenon, Hydrogen, nitrogen, oxygen）
Glass sealed gases themselves are colorless and transparent, they are not empty, and they need to be under high voltage electric field conditions to emit light.
Different gas elements emit different types of light, which is very beautiful and suitable for element collection, hobbies, teaching exhibitions, etc.
You can use ion luminescent balls, Tesla coils, or electric spark leak detectors to make it glow. When the sealed gas approaches the high-pressure arc, the gas will emit light.