Scuba Diving International (SDI) Computer Nitrox Practice Exam

Should BCs and dry suit valves be cleaned for oxygen service when used with Nitrox?

1. Yes, always

2. No, they do not need cleaning

3. Only if used at high pressures

4. It depends on the manufacturer

The correct answer is: No, they do not need cleaning

BCs (Buoyancy Compensators) and dry suit valves do not require cleaning for oxygen service when used with Nitrox because Nitrox consists of a mixture of nitrogen and oxygen, typically with oxygen concentrations less than that of pure oxygen. Most standard equipment used in recreational diving, such as BCs and dry suits, is designed to handle oxygen concentrations typical for Nitrox diving, which is generally safe without the need for special cleaning. However, it is crucial to recognize that while pure oxygen environments necessitate the use of specially cleaned equipment due to the highly reactive nature of oxygen, the lower percentages of oxygen found in Nitrox mitigate those risks. As long as the equipment is designed for use with Nitrox, regular maintenance and cleaning according to the manufacturer's guidelines are sufficient. Always consulting specific manufacturer's recommendations is wise, as some may have particular requirements for their equipment.