Rec. Expl. level 1 + 2

The holder of this card will be certified to conduct decompression dives using scuba equipment to a maximum depth of 45 M.S.W., using a bottom gas containing between 21% and 50% oxygen and helium and a decompression gas containing up to 50% oxygen and helium.

When breathing the bottom gas, the maximum PO₂ may not exceed 1.4 bar.
When breathing a decompression gas containing 50% oxygen, the PO₂ may not exceed 1.6 bar.
The PN₂ may not exceed 3.2 bar.