What should you do if a test tube breaks while you are conducting a laboratory experiment?

well first off you should read the manual and then be careful not to break it Use tongs to grab your test tubes at the center. Wrap the tongs around the center, and hold firmly but not too tightly. Keep the test tube angled away from you at all times, in case of any splashing. When warming the test tube, hold it over the flame at an angle, moving it back and forth gently. 4 Never smell anything inside a test tube directly or look inside a test tube. Waft the air or fumes emitted from the test tube away from you. 5 When not using a test tube, place it upright in the test tube holder. This will help prevent spillage or accidents. hope this helped out.