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He
Helium
Atomic no.:
2
Atom. weight: 4.002602
Density: 0.17847
Class:
Gas
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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 Helium Element Symbol discharge tube 80x80mm  Art. Nr. 004793  
Helium Element Symbol discharge tube 80x80mm
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Helium Element Symbol discharge tube 80x80mm

Perfect for element displays or demonstrations.

100% mercury free - only high purity 99.999% Helium was used.

  • a high voltage power supply 1500-8000V @ 35kHz - 25mA

The suitable power supply but can be found here.

Amount: 1x SET
Purity : 99.9993%
Packing: soft bag
80.00
- tax free

Availability: 4 in stock

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