Parr™ Calorimeter Standards Benzoic Acid in Pellets
Calorific standard in pellet form for standardizing oxygen bomb calorimeters
Parr™ Reaction Bottles for 3911 Shaker Hydrogenation Apparatus
Accessory for 3911 Shaker Hydrogenation Apparatus.
METTLER TOLEDO™ High Temp Differential Scanning Calorimeter (DSC)
Measure samples with the most sensitive Differential Scanning Calorimeter on the market – ideal for investigating all kinds of materials and effects. Our revolutionary star-shaped arrangement of thermocouples guarantees flat baselines and reproducible measurement results.
Parr™ 6100 Compensated Calorimeter
For measuring heats of combustion of solid or liquid fuels, waste materials, and other combustible samples.
Parr™ 6200 Isoperibol Calorimeter
For measuring heats of combustion of solid or liquid fuels, waste materials, and other combustible samples
Parr™ 1757 Dot Matrix Printer for Calorimeters
For 6000 Series Calorimeters produced prior to October 2010.
Parr™ 6765 Combined Solution and Semi-Micro Calorimeter
Performs both solution and semi-micro oxygen bomb calorimetry tests
Parr™ 1341 Plain Jacket Calorimeter
For measuring heat of combustion of solid or liquid fuels, waste materials, and other combustible samples
Parr™ Gelatin Capsule For Calorimeter
Weighs and Handles Volatile Liquid Samples to be Burned in Oxygen Bomb
Parr™ 6420 Expanded System Featuring the 6400 Automatic Isoperibol Calorimeter
Compact complete system
Parr™ 6400 Automatic Isoperibol Calorimeter
High throughput, with minimum operator time between tests
Parr™ Combustion Capsule for Parr Calorimeter Oxygen Combustion Bomb
For use with Parr calorimeter oxygen combustion bomb.
Parr™ Pellet Press For Calorimeter
Makes standardized pellets from powdered coal, catalysts, pharmaceuticals, fine dry chemicals and dyes
American Scientific Calorimeter
For determining specific heat, heat of fusion and heat of vaporization.
Aneroid Dry Calorimeter
Five times more sensitive than traditional versions! Safe for students of all ages.
Eisco™ Copper Calorimeter with Wooden Box
Calorimeters are used in the process of measuring the heat of chemical and physical reactions. This copper calorimeter is 75mm x 50mm and rests on a felt pad inside a polished wooden box. Includes an adjustable brass nickle plated thermometer holder and copper stirrer.
Calorimetry is the measurement of heat from chemical reactions, physical changes, or heat capacity.
The simplest calorimeter consists of a thermometer, metal container of water, and a combustion or reaction chamber. Calorimeters were first devised in the mid-1700s and heat production was determined based on the melting temperatures of snow and ice.
As an example, the heat produced by exothermic reactions in calorimeters is absorbed by the solution, which raises its temperature. In contrast, an endothermic reaction absorbs heat from the solution’s thermal energy, which decreases the temperature. The temperature change, along with the specific heat and mass of the solution, can then be used to calculate the amount of heat involved in either case.
Today’s most commonly used calorimeter types include:
- Differential scanning calorimeters
- Isothermal micro calorimeters
- Titration calorimeters
- Accelerated rate calorimeters
Another type, bomb calorimeters, have a constant volume and are used to measure energy from reactions that produce heat and gaseous products, including combustion reactions. They consist of strong steel containers (the “bomb”) into which the reactants and high-pressure oxygen is added. While the bomb is submerged in water, the mixture is ignited. The energy is trapped in the vessel and the surrounding water. Bomb calorimeters are routinely calibrated (using a standard known reaction) to verify their heat capacity and ensure accurate result calculation.
Calorimeters are useful in many applications:
- Fire effluent characterization
- Geothermal well testing
- Radionuclide standardization
- Natural gas heating values
- Crystallization of hydrates and waxes
- Furniture burning behavior
- Metal injection molding (MIM) material characterizations