When using enriched air with up to 40% oxygen, what is one recommendation?

When using enriched air with up to 40% oxygen, standard scuba equipment is generally acceptable because most recreational diving equipment is designed to handle the pressures and conditions associated with diving with enriched air blends containing up to this percentage of oxygen. Most regulators, tanks, and other diving gear can function effectively with enriched air as long as they are properly maintained and inspected.

This acceptance of standard gear is based on the understanding that enriched air blends up to 40% oxygen do not pose the same risks associated with higher percentages of oxygen, which can require specialized equipment to manage potential oxygen toxicity and fire hazards. Therefore, divers can comfortably and safely use their standard scuba equipment within these parameters, assuming that the gear has not been contaminated by oils or other substances that could react dangerously with higher levels of oxygen.

Diving deeper or using certain types of lubricants might introduce risks that are not present when diving within the guidelines for enriched air. Thus, the emphasis on standard equipment being acceptable is a significant aspect of safe diving practices with enriched air.