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The TDI Entry Level Trimix Course provides the training required
to competently and safely utilise breathing gases containing helium for dives
that require staged decompression, utilising Nitrox or oxygen mixtures during
decompression to a maximum depth of 60m. The objective of this course is to
train divers in the benefits, hazards and proper procedures of utilising custom
O2/He/N2 mixtures as breathing gases.
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