I seal Nitrus Oxide, Ethylene, and Carbon Dioxide inside glass tubes and then coat them in acrylic. Previous videos: https://www.youtube.com/watch?v=4Z-KbcLs-yo https://www.youtube.com/watch?v=jmJiAW9bHsI Help me make videos by donating here: https://www.patreon.com/CodysLab