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Atomic no.:
Atom. weight: 4.002602
Density: 0.17847
Melting point: -271.4°C
Boiling point: -268.935°C
Colour: colourless
Discoverer: Pierre Jules César Janssen
Place: Guntur, India
Year: 1868

A colourless, odourless gas that is totally unreactive. It is extracted from natural gas wells, some of which contain gas that is 7% helium. It is used in deep sea diving for balloons and, as liquid helium , for low temperature research. The Earth’s atmosphere contains 5 parts per million by volume, totalling 400 million tonnes, but it is not worth extracting it from this source at present.

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smart-elements - High purity Helium gas ampoule, purity 99.9993%

High purity Helium gas ampoule, purity 99.9993%

Amount: 1 Stück / 1pc.
Purity :99.9993%

1 pcs.: 18.00 € - tax free
5-9 pcs.: 17.00 €
>9 pcs.: 16.00 €

in stock

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