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  • A photograph of a 20392 heating top for series m, tm or stm heating mantles.

Heating Top for Series M, TM or STM Heating Mantles

Item #: 20392
Quantity:
$275.00

Normal Availability: 4-5 business days

Product Description

This mantle helps prevent vapor condensation in the upper half of a flask during distillation of high-boiling materials. The tops are designed for use with Series M, TM, or STM mantles. They protect the flask, the solutions, and the laboratory from:

  1. Stray drafts, which would disturb the reflux ratio during fractionation;
  2. Flying glass during flask implosions in high-vacuum distillations;
  3. Falling objects;
  4. Thermal strain between top and lower half of flask during high-temperature operations.

With a glass-fabric construction and laced-side opening, the elliptical hole accommodates 1-, 2-, and 3-neck flasks. Includes a detachable 4' 2-wire cord and locking connector.  Also available as an unpowered insulating top (item #20381) . Custom tops available by special order.

Flask Capacity (mL) Flask Diameter (mm) Heating Top Wattage Outside Diameter (in) Product Weight (lb)
250 83 140 4.77 0.6
300 86 140 4.89 0.6
500 101 140 5.48 0.6
1,000 130 140 7.12 0.6
2,000 170 200 8.70 1.0
3,000 183 200 9.20 1.8
5,000 220 300 10.66 2.8
12,000 293 590 14.53 4.4
22,000 347 650 16.66 6.8
50,000 456 1,000 20.95 10.8
72,000 522 1,000 23.35 11.8

Other Details

Manufactured in: USA

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