Reagent bottles are labeled using a system which includes a "hybrid" hazard labeling system. When reagents arrive from the manufacturer, the labels are intended to communicate the hazards and precautions of handling a particular chemical to the researchers and professionals who will be using the chemical. Much of this information is also included in compliance with HCS legislation, to protect the manufacturer from liability for any accidents which occur during handling of the chemical. http://www.sun-trine.com/reagent-bottle/narrow-mouth-reagent-bottle/