When reaction is anticipated or fumes are expected, perform transfers in a fume hood with the glass pulled down between your face and the reagents. This will prevent contact with the reagents. The rod is placed into the receiving vessel and liquid is poured. The rod acts as a guide for the liquid and helps to eliminate splashing and splattering. Use a boiling stone in a flask or heat directly under a stirring rod.
Many laboratory accidents result from improper use of glassware.
Widespread use of glassware tends to make users disregard the hazards associated with it. Caution should always be used when glassware is being handled. A. Disposal - Cracked, chipped or broken glassware will not be used. Before being sent for repair or disposal, damaged glassware must be thoroughly cleaned and dried. If repair is impractical or dangerous, the damaged item should discarded according to the appropriate procedure.