Laboratory-scale hot plates withstand aggressive media
TorreyPines Scientific
The EchoTherm Model H270 Programmable Stirring Hot Plate (photo) is designed to be purged using an inert gas through a fitting on the rear of the chassis. Purging provides a positive pressure inside the unit to prevent corrosive gases from entering the chassis and attacking the electronics of the stirring mechanism. These units feature ten-program memory with ten steps per program, temperature ramping, RS-242 I/O port, membrane keyboard and full-function liquid-crystal display (where all parameters are continuously visible). Heater tops are 8-in. square, solid ceramic with 600 W of power. Temperatures can be set to 450°C, are controlled by PID software, and are accurate to±1°C and±1°F, says the company.The units are supplied with a 6-in. Teflon immersion probe for controlling solution temperatures directly. — TorreyPines Scientific, Carlsbad, Calif.