The SSI Extended Range Nitrox program provides a thorough introduction to the concepts, techniques, and procedures required when planning a decompression dive with nitrox. Designed as either a stand-alone program or as a stepping stone to SSI's Extended Range Nitrox Diving, this program provides the basic skills that are the foundation for all future technical programs. Using the XR Sidemount or Twinset Total Diving System, this program will prepare the diver to plan and execute limited decompression dives to a maximum depth of 40 meters / 130 feet. In addition, this advanced nitrox diving course will teach you techniques and procedures for using breathing gases up to 50% oxygen for decompression.