What does tare weight represent on a cylinder?

• A. Empty cylinder weight
• B. Full cylinder weight
• C. Weight of contents
• D. Weight of valve

Answer: (A)

Tare weight is the empty cylinder weight—the container with its valve but without any gas. This baseline lets you find how much gas is inside by comparing the full cylinder weight to the tare weight. For example, if a full cylinder weighs 60 lb and the tare weight is 20 lb, the gas inside weighs 40 lb. tare weight is not the weight of the contents, and it represents the container when it has no gas.