As a Nitrox diver, you can increase your dive times and safety margins, and shorten your surface intervals - so you can spend more time diving and less time waiting! In this program, you'll learn new skills and increase your diving knowledge while learning to plan and dive safely with enriched air mixtures containing up to 40% oxygen. On completion of this program, you will be awarded SSI Enriched Air Nitrox 32% or 40% certification.