Which of the following is part of proper maintenance for dive instruments?

• A. Rinse them in fresh water at the end of each diving day.
• B. Have them inspected and serviced annually by a qualified technician.
• C. Do not subject them to extreme temperature changes.
• D. All of the above.

Answer: (D)

Regular maintenance of dive instruments involves cleaning and protecting the gear after use, keeping calibration accurate, and avoiding stress to the materials. Rinsing in fresh water after saltwater dives removes salt, grime, and minerals that can corrode or clog seals, batteries, and sensors. Having them inspected and serviced annually by a qualified technician helps ensure readings stay accurate and that o-rings, seals, and electronics remain in good condition, reducing the risk of failure underwater. Do not subject instruments to extreme temperature changes because rapid shifts can cause condensation inside the housing, affect battery performance, and stress seals. Because these practices collectively protect reliability and safety, all of these steps belong in proper maintenance.