The EchoTerm HS40 programmable digital stirring hot plate from Torrey Pines Scientific Inc, Carlsbad, Calif, is suited for laboratories that require reproducible, accurate chemical reaction control, and sample preparation. Programming is done through a front panel membrane switch and full-functioned custom liquid crystal display. The unit can store 10 programs of as many as 10 steps each. Steps consist of temperature, temperature ramp rate, stirring speed, and time. Each program can be made to repeat itself automatically from 1 to 98 times, or infinitely. Heater plates are 8 inches x 8 inches of white, solid ceramic glass for chemical resistance and quick heating. The plate surface can be heated from ambient to 450°C in less than 3 minutes. Plate surface temperature or solution temperature can be controlled directly to 1°C of the target. For more information, visit Torrey Pines Scientific.