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In page Nitrox:

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In 1993, Skin Diver magazine, the leading recreational diving publication at the time,[citation needed] published a three-part series arguing that nitrox was unsafe for sport divers.[10][citation needed] DiveRite manufactured the first nitrox-compatible dive computer, called the Bridge,[11] the aquaCorps TEK93 conference was held in San Francisco, and a practicable oil limit of 0.1 mg/m3 for oxygen compatible air was set. The Canadian armed forces issued EAD tables with an upper PO2 of 1.5 ATA.[1]