This bulletin of the Scottish Schools Science Equipment Research Centre provides information to teachers on a variety of topics relating to the use of equipment in science instruction. The introductory remarks deal with an assessment of electronic calculators suitable for use in schools. The section entitled "Physics Notes" lists surplus physics equipment available to schools at the Research Centre and discusses the disposal of radioactive materials, an inductive reactance demonstration, and the use of filter pumps. In the section dealing with biology, the use of Clinistix and Albustix in testing food is outlined. "Chemistry Notes" provide suggestions to teachers on explosive gas mistures, the storage of sulfur dioxide cylinders, and the construction of a pipette filler based on a disposable syringe. A list is also provided of the equipment that has been tested by the Consortium of Local Education Authorities for the Provision of Science Equipment (CLEAPSE). Reports of these tests are available for examination by science teachers. (JR)