14.Clean up all broken glass immediately. Dispose of broken glass in special recepticles labeled for broken glass. Do not put broken glass in trash cans. The cleaning crew may cut themselves. Similarly, spilled chemicals should be cleaned up immediately-consult your instructor for details.
15.Always pour concentrated acids into water, never water into acid. Some concentrated acids (sulfuric acid, for example) release enough heat to cause severe splattering. Hot, concentrated acids are very corrosive.
16.Observe carefully the safety precautions that are included in the experiment. The section on Laboratory Techniques includes many safety precautions.
never water into acid