Disposable cylinders are manufactured to specifications established by which organization?

The correct choice is established by the Department of Transportation (DOT) because they are responsible for setting the specifications and regulations for the manufacturing and certification of disposable cylinders. This includes ensuring that these cylinders are safe for transporting hazardous materials, which can include refrigerants used in motor vehicle air conditioning (MVAC) systems. The DOT's regulations cover aspects such as design, construction, testing, and maintenance, thereby guaranteeing that cylinders can withstand the pressures and conditions they may encounter during use.

While the Environmental Protection Agency (EPA) oversees the management of refrigerants and other environmental issues, and the National Institute of Standards and Technology (NIST) provides measurement standards, they do not directly regulate the manufacturing specifications of disposable cylinders. The Occupational Safety and Health Administration (OSHA) focuses on workplace safety and health regulations, which may involve safe practices for handling these cylinders, but not their manufacturing standards.