Rare Luminous Gases Element Collection, 99.999% Purity, Including Helium, Neon, Argon, Krypton, Xenon, Nitrogen, Oxygen, Carbon Dioxide, Air, for Collection, Display, Teaching, Gift, Pack of 9

I purchased these as a reference for what color is emitted by these gases. They were packaged well in bubble wrap and double boxed. I appreciate the care taken to package them. All tubes work. I found some gases need a fairly high level of energy from a small tesla coil to excite the gas to illuminate. As well as a dark room to see it, but i think that is expected.

Los gases fácilmente pasan a estado de plasma con colores definidos con una bobina de Tesla, aunque el tubo de oxígeno presenta mayor dificultar para ionizarse.

These work great with my Tesla coil. The noble gases have a higher luminosity than the Air, CO2, O2, and N2 but all of them illuminate and my students loved seeing them.

Got it as a gift for someone, so I can't really comment much beyond it appears to be your basic test tubes with noble gas sealed inside. The customer service is really communicative. The items were packed with extreme care- a box within a box, and bubble wrapped individually, as well as the sides of the 2nd box. They're nicely sized and would store perfectly on a test tube rack.

They are Nicely made, very well packed, they glow fantastically with my Tesla Coil. Great for classroom science projects or to just impress your friends at the next bong party.