Which refrigerant color indicates that the cylinder contains R-134a?

The color indicating that a cylinder contains R-134a is light blue. This color coding helps in easily identifying the type of refrigerant contained within the cylinder, which is crucial for safety and efficiency in handling refrigerants. R-134a is a common refrigerant used in automotive and commercial refrigeration applications. Having a standardized color, such as light blue, assists technicians and engineers in quickly selecting the correct refrigerant, thereby avoiding cross-contamination and potential safety hazards that could arise from using the incorrect refrigerant in a system.

In practice, these standardized colors are part of guidelines established to promote safety and prevent errors in handling refrigerants. Light blue being associated specifically with R-134a ensures that anyone working in the field can easily recognize and verify the refrigerant without requiring additional tools or lengthy checks.