When working in a laboratory, follow the lab rules. Hazard symbols give information about chemicals and materials. When working in a lab, take safety precautions .

It was a common laboratory procedure with an unexpectedreaction: A chemistry experiment at Columbia University ended in an explosion that left a post-doctoral researcher hospitalized with serious b… ...

When working in a laboratory, follow the lab rules. Hazard symbols give information about chemicals and materials. When working in a lab, take safety precautions .