Tech 40 is the first level of tech offered by PADI
You'll learn to
•Use decompression software and dive computers to plan and make decompression dives with no more than 10 minutes of total decompression and not deeper than 40 metres/130 feet.
•Use a single cylinder of decompression gas with up to 50 percent oxygen (EANx50) to add conservatism to the required decompression.
As a dive professional you should be sure of your information before posting information that is blantantly wrong.
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