International Association of Nitrox and Technical Divers (IANTD) offers mission statement, information on training programs, articles, and contacts.

An overview of safety and technical issues for the gas mixture. Features an appendix of related acronyms.

A certification agency specialized in technical diving training. Features information on educational programs, news, contacts, and directory.

Find details on trimix and gas blending training. Includes articles on technology, course outlines, training, and instructors.

Provides information on the history and benefits and limitations of the gas mix. Features a brief history of the technology, safety issues, and myths.

Scientific references compiled by Larry "Harris" Taylor, Ph.D.

Safety manual provided by University of Alaska Scientific Diving program. Features information on gas mixing, oxygen parameters, and equipment guidelines.

Features background information, FAQ, and links, Also find Equivalent Air Depth and Oxygen Partial Pressure charts.