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A sealed ampoule of pressurized supercritical Xenon gas/Iodine solution. Purity is 99%+. This amazing sample will phase change before your eyes when cooled below 16°C. Let it warm up above 16°C and watch it boil away into the gas phase again. The first picture shows a cooled ampoule on the left in liquid phase which looks like a purple solution with some visible iodine crystals. The ampoule on the right is at room temp in gas phase which looks like a purple gas with some visible iodine crystals. This is truly an amazing sample and fun to watch! This fits perfectly inside the included 1 dram vial for display.