Diving to great depths places particular demands on divers and their equipment. Diving gas mixtures also play a vital role. They allow divers to adapt to the specific conditions that exist deep underwater. For example, the greater the depth, the higher the oxygen partial pressure, which can lead to a toxic effect on the human body at certain oxygen concentrations. Divers counteract this with special diving gas mixtures which are calibrated for each dive. Under the brand name Diveline, Messer supplies helium, oxygen and nitrogen as pure gases which can then be used to prepare the appropriate diving gas mixtures as required.
Safety at great depths