Helium has become a very rare Gas. So these are perfect for experiments, element collectables as well as great gifts. You will receive 3 full cylinders.
Each micro-cylinder is precision-made from high-grade aluminum alloy
components, which are pressed into shape via a deep drawing process, and then
precision laser welded. The intricate pressurization and welding process, all
to medical standards of quality and cleanliness.
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