This guidebook contains designs of laboratory equipment considered essential for student investigations in introductory chemistry in developing countries. The designs presented are based on the premise that many students and teachers will wish to make equipment for themselves. Although all the designs have been tested under laboratory conditions at the University of Maryland, they have not been tested in school situations nor produced and tested under local conditions in developing countries. The tools and materials required to make specific items of equipment are indicated at the beginning of each item description. Dimensions and detailed instructions are provided with each design. (SE 014 166 deals with biology equipment; SE 014 168, physics equipment.) (CP)