Course Overview
TDI Nitrox Blender teaches the proper techniques, equipment requirements, and hazards involved in blending nitrox gases for scuba diving. The official TDI page frames the course as behind-the-scenes training for the fill station, where accurate mixtures, oxygen handling, analysis, labeling, and documentation matter as much as the dive itself. Students learn how cylinders go from empty to analyzed nitrox blends ready for diver use.
This course is useful for dive shop staff, working divers, and technically minded recreational divers who want to understand nitrox production. TDI lists minimum age 18 as the course prerequisite. It is not an in-water course; the responsibility is operational and practical, with emphasis on safe oxygen handling, blending accuracy, fire prevention, and verification before any cylinder leaves the fill station.
Training covers the responsibility of the gas blender, air, oxygen, nitrogen, oxygen hazards, oxygen system design, gas production equipment, compressors, cylinders, filtration, gauges, continuous blending, de-nitrogenated air systems, premix systems, partial-pressure blending math, oxygen analyzers, cylinder handling, and sign-out procedures. In High Springs, Florida, it is valuable for divers and staff supporting nitrox-intensive diving. Successful students may blend nitrox gases without direct instructor supervision, within appropriate facility procedures.
