A Mini Scuba Cylinder Failed Inspection. What Should a Replacement Quote Cover?

When a qualified inspector reports that a mini scuba cylinder failed, ask for the written disposition before requesting a replacement. The report should identify the exact cylinder and what the qualified provider decided. Set the equipment aside and let that provider tell you how to handle it while the next step is being arranged.

Ask what the actual report says

For specification cylinders within the scope of the United States hazardous-materials transportation rules, 49 CFR 180.205 addresses rejection in paragraph (i) and condemnation in paragraph (j). They are different formal outcomes. A condemned cylinder in that scope receives a formal disposition and cannot be refilled for transport in commerce where specification packaging is required. Treat any rejected equipment as out of service until a qualified professional has explained its recorded status and whether any authorized option applies. For other countries and equipment outside that scope, ask the qualified provider which local rules govern it.

Divers Alert Network’s cylinder-inspection guidance explains the value of qualified inspection when integrity is in doubt and of keeping inspection records. Ask the inspector to identify the cylinder and its associated parts clearly. Retain the written finding and get the provider’s instructions for handling the original unit. Leave identification and formal markings to authorized personnel.

Build the quote from the finding

The TRIMIX T-500 manual identifies the cylinder and breathing assembly separately and includes storage, maintenance and disposal guidance. For a replacement involving the T-500, ask the service provider which parts need replacement and which associated equipment still requires its own assessment. A complete quote should name the exact supplied parts, the applicable manuals and the person who will verify the combination.

• Keep the written inspection finding with the original cylinder record.
• Ask what the replacement price covers, including any assembly or inspection work.
• Have the qualified provider confirm the replacement’s markings, compatibility, breathing-air fill arrangements and servicing requirements.

Use the T-500 product inquiry to request written replacement scope and model documentation. Provide the model, country and relevant part of the inspection finding. Ask the provider to assess the complete configuration before it is returned to service.

Evergreen buyer guide verified November 12, 2026. Sources: U.S. eCFR 49 CFR 180.205, specification cylinder requalification (undated); Divers Alert Network Inspecting and Testing Scuba Cylinders (2021-12-11); TRIMIX T-500 User Manual (undated); TRIMIX T-500 product listing (2026-09-25).