Glas Col Heat Mantles

Glas-Col's combination mantles have always been the mantles of choice for repetitive extracting, refluxing, and distilling procedures in labs of food, textile fiber, water and waste-water, petroleum, and many other industries. Glas-Col's latest version offers safety and convenience never before available in a multi-place heating mantle.    Each six-place Combo is furnished with six spring-type glassware clamps, and each three-place unit contains three. The clamps hold glassware from 1-5/8" - 2" in diameter. The clamps attach to one of the horizontal support rods. Two Series RL control choices are available: percentage timer or proportional voltage. The percentage-timer version pulses full-line voltage to each heating position according to the dial setting. The proportional-voltage version supplies a constant, steady-state voltage to each position. The six-place controls are actually two units that can be mounted together or separately. The cord-connected controls allow placement at a convenient location for the operator.