What should be the measurement standard for disposable refrigerant cylinders?

The appropriate measurement standard for disposable refrigerant cylinders is DOT specifications. The Department of Transportation (DOT) has established regulations that ensure the safe transportation of hazardous materials, including refrigerants. These specifications cover the design, construction, and testing of containers used for transporting compressed gases, which ensures that they can safely contain refrigerants without leaking or failing under pressure.

Using DOT specifications helps in maintaining safety throughout the supply chain, from manufacturers to end users, thereby complying with federal regulations. It includes criteria for materials, pressure ratings, and proper labeling to facilitate safe handling and transport.

While other standards like steel tank specifications, ISO standards, and EPA guidelines provide important context and regulations regarding the use and environmental impact of refrigerants, they do not specifically set forth the requirements for the design and safety of the cylinders themselves. Therefore, reliance on DOT specifications is vital to ensure that disposable refrigerant cylinders are built and used within a framework that prioritizes safety and compliance.