DNAx Nitrox membrane compressors. In other words a compressor that "De-Nitrogenises Air" (DNA), or in layman's terms, takes air throws away the nitrogen and saves what's left, "OXYGEN ENRICHED AIR". The technology behind this system has been available for years but has only been utilised in industry due to the size, complexity, and cost of the membrane.

The new membranes now available do away with all these problems and provide small, easily maintained, cost-effective units that can be used with most compression systems or bought as a complete compression system in a purpose built cabinet.

The MCH 14 TECH NITROX manufactured by Aerotechnica Coltri of Italy. This is a semi-soundproofed cabinet and uses a Coltri 9.3 cfm (260 litres/min) high pressure compressor, which has been set to run at 8 cfm (225 litres/min) in order to maximise the effect of the membrane. The purpose built cabinet also contains a low pressure compressor, membrane system, low pressure receiver, two oxygen analysers and breathing air filtration for both low and high pressure compressors. By leaving the low pressure compressor switched off during operation the high pressure compressor can be utilised to provide high pressure air to 300 bar at 21% oxygen.

Undersea Breathing Systems Inc is the inventor of the patented DNAx# (De-Nitrogenated Air Nitrox) Membrane System that has dramatically changed the concept of diving with Nitrox. The DNAx# System produces any blend of Nitrox from 21% through 40% oxygen by de-nitrogenating instead of enriching standard air with high pressure oxygen.

For Parts and Spares follow the following links:

MCH-14 Parts & Spares
MCH-14 Tech Nitrox Compressor