Oxygen is the donor and rescuer of life.

The gas in ultra-pure form (up to 99.9 per cent) is used over a wide range, particularly in medicine. It can be transported particularly well in its liquid state; in this connection the refundable deposit system for oxygen cylinders has become established in clinics. Emergency and traumatology cannot be imagined any longer without respirators and oxygen.
 
And this gas is also a help in all cases in which the body is not sufficiently supplied with oxygen: cardiac diseases, assimilation disorders, artery obstructions and toxication are treated with pure oxygen.
 
However, not only physicians but also athletes, for instance extreme climbers need oxygen bottles to compensate oxygen deficiencies. A permanent shortage can cause unconsciousness and, at great altitudes, may lead to life-threatening situations.
 
Other interesting utilisation possibilities for oxygen is the treatment of waste water and fish farming. In a fish farm pond enriched by oxygen, the precious fish inventory can grow and thrive under the very best conditions.
 
Oxygen is used in the food industry for packaging under inert gas atmosphere. Oxygen helps to conserve the colour of fresh meat for a longer time.
 

Nitrogen. The universal assistant.

Pure liquid nitrogen helps man in many fields of life and is particularly used as coolant in a number of different industries.
 
Liquid nitrogen is a universal assistant in the food industry. Due to its low temperature, nitrogen can help in prolonging the storage life of certain foods or improves its compatibility. This inert gas is also suitable to cool and freeze food.
 
Further fields in which liquid nitrogen can be implemented are found in the pharmaceutical industry, biology and medicine: Large surface wounds can be cooled using liquid nitrogen or ugly and possibly malignant pachyderma such as, for instance, warts, can be removed.
 
The gas can be decisive for the performance of the nuclear magnetic resonance spectrometry/tomography. It is also suitable for the preservation of blood and tissue samples. In addition liquid nitrogen is used for the conservation of sperm for artificial insemination.
 
Liquid nitrogen is furthermore used for cold branding, for deburring plastics, press fits or as inert gas.
 

Argon, a many-sided assistant.

Argon is a colourless, odourless, inert, one-atom gas. It is the most common inert gas found in the earth's atmosphere. Everywhere, where a lot of metal is produced, liquid argon is used. Argon is particularly used as inert gas. Furthermore, argon is used when welding aluminium, carbon steel, stainless steel and titanium alloys in the semi-conductor and solar industry.
 
Argon is also an assistant in the analysis of the compounds of metal alloys, water (polluted and drinking water quality), fuels (determination of foreign substances), food (beverage, preserves etc.), cement, stones, sediments, other geological materials as well as biological samples (toxicological analyses).
 
In addition, liquid argon is also used in the manufacture of double glazing. Here argon contributes towards improving the insulation properties of sealed double glazing units.