Cooking gas is on the disappointing equipment used in cooking. You will understand that is something you can't see nor does it have a gage. so when you are using it one need to be considering the day of purchase and the lasting day. Even when someone is filling it you can't even identify whether it is water that he is putting or the gas. When is filled, you can't know except through the heaviness. It is now call for modern cylinder that will have scale to save people from experiencing this kind of disappointment.