Know and understand the properties, uses, and safety precautions before using any gas or gas mixture. Consult the Air Products Material Safety Data Sheet (MSDS) and Safetygrams for safety information on the gases and equipment you will be using.

• 在使用任何气体或气体混合物之前，要知道和理解性质、用途和安全防范。关于你将要使用的气体和设备的安全资料，请参考air Products的材料安全数据表（MSDS）和安全程序。