Does Benthic SCUBA require my Trimix cylinder be suitable for oxygen service?
Mostly. Because we can preblend our Trimix via a continuous atmospheric entrainment blending system, hyperoxic gases never come in contact with your cylinder. Thus, at Benthic SCUBA our Trimix fills do NOT require that your cylinder and valve be suitable for oxygen service (although it is recommended). NOTE: The U.S DOT has interpreted its regulations stating that DOT-3AL (aluminum) SCUBA cylinders cannot be charged with oxygen enriched air to a service pressure greater than 3000psi. Thus, Aluminum Cylinders with pressure ratings greater than 3000psi (eg. Catalina 100s are filled to 3300psi as well as compact SCUBA cylinders) cannot be charged with oxygen enriched air as mandated by the DOT.
