Aspirin is to this day the most widely-used painkiller and largest selling nonprescription medicine in the world. Students will learn about the history of the development of acetylsalicylic acid (aspirin) as well as test the performance of several different types of aspirin. Among the properties the students will examine are the solubility of aspirin in varying gastrointestinal environments, a comparison of active ingredients in regular and extra strength aspirin, and the differences between regular and buffered aspirin. All aspirin samples are included in the kit and there are enough materials for fifteen groups.

Materials included in the kit:
5 x 30 ml Hydrochloric Acid, 1M Solution UN1789; 8 x 30 ml Sodium Hydroxide, 1M Solution UN1824; 1 x 30 ml Phenolphthalein, 1% in Ethanol UN1170; 1 Pkg/50 Universal Indicator Strips; 1 Pkg/15 Graduated Plastic Pipettes; 45 Disposable Medicine Cups; 1 Pkg/75 Aspirin, Regular; 1 Pkg/60 Aspirin, Buffered; 1 Pkg/45 Aspirin, Enteric Coated; 1 Pkg/15 Aspirin, Extra Strength.