Do not attempt to dry glassware by inserting a towel wrapped around a glass rod. When cutting glass tubing, always protect your hands with a towel. When inserting rods, tubing or thermometers into stoppers, the glass must be lubricated with soapy water or glycerol. Tubing ends must always be firepolished. Make sure that the glass is cool before you touch it.
Hot glass looks just like cool glass.
Food and beverages are prohibited in the laboratory. Do not use chemical apparatus for eating or drinking. Wash your hands at the end of the laboratory session before you exit the laboratory. The performance of unauthorized experiments and the use of any equipment in an unauthorized or unsafe manner are strictly forbidden. Do not perform experimental work during video presentations.