Nitrox, also known as Enriched Air, EANx or Safe Air, is a gas with an oxygen content above 21%. In scuba diving it is mainly used to reduce the proportion of nitrogen in the breathing gas mixture. Using a breathing gas with proportionally less nitrogen and an increase of oxygen reduces the risk of decompression sickness for the same dive profile. It can alternatively also be used to allow an extended dive time within the no decompression limit. ProNRC, formerly known under the name NRC, has become very well-known in the diving industry over the past 17 years, and has modernized Nitrox’s image over these past years. The ProNRC Nitrox training is thorough, easy to understand and is highly recommended to any diver!