Final answer:
Portable fire extinguishers must be labeled with instructions for use to ensure proper responding during emergencies in laboratories. Other details like manufacturer's name and type of extinguisher are also present, but not necessarily the manufacturer's address or extinguisher's weight.
Step-by-step explanation:
Every portable fire extinguisher must be labeled with instructions for use. This is essential for ensuring safety in the laboratory, where the risk of fires can be increased due to the presence of flammable chemicals. It is important for students and laboratory personnel to know where safety equipment is located, including the fire extinguisher, and how to use it correctly in the event of a fire.
Aside from instructions for use, labels typically include other important information such as the type of fires the extinguisher is designed to combat (e.g., Class A, B, C, D, or K), the manufacturer's name, and the date of manufacture or expiration. However, the label may not necessarily include the manufacturer's address or the extinguisher's weight, as these details are less critical for immediate use during an emergency.
It's also crucial to follow instructions carefully when handling flammable chemicals in the lab. By knowing how to properly use a fire extinguisher, students can effectively respond to any incidents and prevent harm to themselves and others.