What is the maximum amount of refrigerant allowed in a 120 lb. cylinder?

The maximum amount of refrigerant allowed in a 120 lb. cylinder is defined by the standards set forth by the Environmental Protection Agency (EPA) and related industry regulations. A 120 lb. cylinder is designed to hold a maximum charge of refrigerant, but it is also important to consider safety and operational guidelines.

In this case, the correct answer reflects the typical maximum fill level, which is often around 80% of the cylinder's total capacity. This is done to leave space for vapor, prevent overfilling, and ensure safety during transport and storage. Thus, while the cylinder's total weight may be listed as 120 lbs, the maximum refrigerant content is limited to 96 lbs to comply with safe handling practices.

The correct fill level prevents problems such as excessive pressure buildup and ensures that the cylinder can safely handle changes in temperature and pressure that occur in various conditions.