If you are unsure about what you are doing, get assistance. Do not use unfamiliar chemicals, equipment, or procedures alone. Use equipment for its intended purpose only. Do not defeat, remove, or override equipment safety devices. Working in a laboratory requires various types of equipment.
Equipment works properly.
Disconnect any equipment that is unsafe or does not work properly, and remove it from service. Notify other users of the problem. Refer to the Laboratory Safety Manual for specific information on operating laboratory equipment, such as fume hoods, heating devices, vacuums, etc.