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O
Oxygen
Atomic no.:
8
Atom. weight: 15.9994
Density: 1.33
Class:
Gas
Melting point: -218.8°C
Boiling point: -182.962°C
Colour: colourless
   
Discoverer: Joseph Priestley, Carl Scheele
Place: England, Sweden
Year: 1774

A colourless, odourless gas that makes up 21% of the atmosphere, which is half-way between 17% (below which breathing for unacclimatised people becomes difficult) and 25% (above which many organic compounds are highly flammable). The element is essential for all forms of life since it is a constituent of DNA, and it comprises over half the mass of the average person. Indeed it is the most common element in the Earth’s crust, in the form of silicon-oxygen minerals, and in the sea since it accounts for 89% of the mass of water. Oxygen gas is fairly soluble in water, which makes life in rivers, lakes and oceans possible. We breathe in oxygen so that it can react with energy stores in our bodies to provide the heat and motion that keeps us alive, and we return it to the atmosphere as carbon dioxide. Industrially, oxygen is produced on a large scale from liquid air, and used for steel making, metal cutting (oxy-acetylene torches) and by the chemicals industry.

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 Gases discharge tube set, size approximately ~75x75mm  Art. Nr. 003849  
Gases discharge tube set, size approximately ~75x75mm
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The ultimate H2 O2 N2 gas tubes-Set without metal electrodes - Made in Germany

 

Size of the tubes ~ 75x75 mm. Each Element is represented as a separate tube filled with the corresponding gas:
O - Oxygen, N - Nitrogen, H-Hydrogen.

All tubes are 100% mercury and lead free!
Only purest gases are used!
Please note: The power supply is available here!

The tubes work with a 2 - 5kV power supply / 35-40kHz @ 20mA

 

Attention! The gases in these tubes are excited through the glass. No metal electrodes are used. This considerably increases the life time of the tubes, but the gases are relatively reactive and will react with the glass if used over a longer period.

 

Amount: 1x SET
Purity : >99.99%
Packing: soft bag
201.00
- tax free

Availability: 2 in stock

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