As a Nitrox diver, you can increase your bottom times and safety margins and shorten your surface intervals - so you can spend more time diving and less time waiting! In this course, you'll learn new skills and expand your diving knowledge as you learn how to safely plan and dive with enriched air mixtures of up to 40% oxygen. Upon completion of the course you will receive an SSI Enriched Air Nitrox 32% or 40% certification.