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Enriched Air Nitrox" or "EAN", and "Oxygen Enriched Air" are used to emphasize richer than air mixtures. [3] In "EANx", the "x" was originally the x of nitrox, [11] but has come to indicate the percentage of oxygen in the mix and is replaced by a number when the percentage is known; for example, a 40% oxygen mix is called EAN40. The two most ...
"Nitrox 32", or EAN 32, would be a nitrox blend with 32% oxygen and 68% nitrogen. This is a popular recreational blend for dives to depths up to 33 metres (108 ft). The nitrogen in the mixture is almost always provided by topping up the cylinder with air to the filling pressure.
The equivalent air depth, for a given nitrox mix and depth, is the depth of a dive when breathing air that would have the same partial pressure of nitrogen. So, for example, a gas mix containing 36% oxygen (EAN36) being used at 27 metres (89 ft) has an EAD of 20 metres (66 ft).
ISO 11107 Enriched air nitrox (EAN) diving (PADI equivalent – Enriched Air Diver) ISO 11121 introductory training programmes to scuba diving. (PADI equivalent – Discover Scuba Diving) Most PADI training programes are not directly covered by ISO standards.
nitrox. Also: "Enriched Air Nitrox (EAN)" Main article Nitrox. Mixture of nitrogen and oxygen for use as breathing gas. Usually with oxygen percentage higher than air. nitrox stick. See: Gas blending for scuba diving#Mixing the gases. A mixing tube used to blend oxygen with air before compressing to make nitrox breathing gas.
American Nitrox Divers International (or ANDI) was founded by Ed Betts and Dick Rutkowski in 1988. [1]ANDI has since expanded to include offices in The United Kingdom, Israel, Australia, Sweden, Italy, Germany, The Netherlands, Greece, Japan, Taiwan, Republic of Korea, Republic of Maldives, Republic of Philippines, Latin America, Middle East, with its home office in the United States of America.
The most commonly used EAN standard is the thirteen-digit EAN-13, a superset of the original 12-digit Universal Product Code (UPC-A) standard developed in 1970 by George J. Laurer. [1] An EAN-13 number includes a 3-digit GS1 prefix (indicating country of registration or special type of product). A prefix with a first digit of "0" indicates a 12 ...
He is known for developing the widely used NOAA Nitrox I (32% O2/N2) and II (36% O2/N2) mixtures and their decompression tables in the late 1970s, the deep diving mixture of oxygen, helium, and nitrogen known as NOAA Trimix I, for research in undersea habitats, where divers live and work under pressure for extended periods, and for training ...