© Nottingham Adventure Centre Ltd 2011 site home | about us | contact us | calendar | location maps To book call the Dive Centre on 0115 929 0707  or reserve your place on-line today. What do I need to start? PADI Enriched Air Diver certification (or qualifying certification from another organization) Minimum age: 18 years old. What will I do? The DSAT Gas Blender course will train you as a qualified gas blender, allowing you to provide gas mixes to appropriately certified consumers. You'll learn the physical properties of oxygen, its associated hazards, handling requirements and what cleaning equipment is necessary. Finally, you will learn the five methods of obtaining the desired enriched air Nitrox mix and the various methods used to obtain proper helium* mixes. New revised course based on using Nitrox with dive computers. More people are diving with enriched air and this means the demand for enriched Nitrox air fills is also increasing. However, there needs to be someone qualified to administer these fills to meet this demand. This is where the DSAT Gas Blender course comes in. It can result in one of two certifications: DSAT Gas Blender or DSAT Trimix* Blender. *Gas Blending Nitrox courses run every month, helium blending by special arrangement.