TDI Advanced Nitrox Diver
This two day course, includes 4 nitrox dives (100 minutes bottom time) and covers all the topics in the nitrox course in much greater detail, with in-depth coverage of CNS and whole body oxygen toxicity and tracking, common mixing methods, best mix computations, decompression gas, accelerated decompression, dive planning, gas consumption calculations and equipment  considerations, all culminating in certification to use 22% -100% oxygen as a breathing gas.
Prerequisites
Cost £220
TDI Combined Basic & Advanced Nitrox Diver
This course includes both of the above courses in one go. It is more intensive, but more efficient. It includes 4 nitrox dives (100 minutes bottom time) and covers all the topics in nitrox in great detail, all culminating in certification to use 22%-100% oxygen as a breathing gas.
Prerequisites
Cost £250
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