Parr 6725EA Semimicro Calorimeter, With 1107/22ml Oxygen Bomb, 115V/50-60Hz

90-4065-02Parr 6725EA semimicro calorimeter shown with Parr 6772 Precision Thermometer

The 6725EA Semimicro Calorimeter is a compact and easily operated, static jacket, combustion calorimeter designed specifically for measuring the heat of combustion of small samples when only limited amounts of test material are available. The need for semimicro operation frequently arises in marine biology and other ecological studies where sample sizes are limited, also for testing heat powders and pyrotechnic mixtures.


  • The 22 mL, 1109 / 1109A Oxygen Bomb used in the semimicro calorimeter will handle samples ranging from 25 to 200 milligrams, liberating up to 1200 calories when burned in oxygen.
  • Effective static thermal insulation is provided by using a silvered glass Dewar as the calorimeter vessel. This vacuum flask holds the 1107 oxygen bomb in 450 grams of water. It is supported within a stainless steel air can from which it is easily removed for filling or cleaning.
  • The 6725 semimicro calorimeter utilizes the 6772 precision calorimeter thermometer/controller (must be purchased separately) which provides all of the temperature measurement, automation and data handling capabilities of the larger series 6000 calorimeters.

Supplied with

  • Silvered glass Dewar flask as the calorimeter vessel.
  • Parr 1107 oxygen bomb.
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