Oxygen bomb calorimeters measure the heat of chemical reactions or physical changes. This is done by performing the reaction in a container that maintains constant volume and they are thus designed to withstand the pressure that builds up as the reaction occurs. In an oxygen bomb calorimeter, the sample is loaded in the reaction chamber (called the bomb) along with oxygen; this is submerged in water within an insulating container. Once the sample is ignited, a thermometer which is partially submerged in the water, records the temperature changes that occur. Level of precision, capacity, and price are important considerations when purchasing a bomb calorimeter.
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| Company | Parr Instrument Company | Parr Instrument Company | Parr Instrument Company | Parr Instrument Company | Parr Instrument Company |
| Item | Automatic Isoperibol Calorimeter | Detonation Calorimeter | Plain Jacket Calorimeter | Semimicro Calorimeter | Solution Calorimeter |
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| Catalog Number | 6400 | 6790 | 1341 | 6725 | 6755 |
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| Description | The 6400 Automatic Isoperibol Calorimeter represents the next evolutionary step in the Parr automated calorimeters. Inclusive and compact, the instrument incorporates a closed loop cooling subsystem into the calorimeter. This subsystem uses a thermoelectric cooler assembly attached directly to a oneThe 6400 Automatic Isoperibol Calorimeter represents the next evolutionary step in the Parr automated calorimeters. Inclusive and compact, the instrument incorporates a closed loop cooling subsystem into the calorimeter. This subsystem uses a thermoelectric cooler assembly attached directly to a one liter water tank which supplies cooling water to the calorimeter. An external nitrogen pressurized tank is used to supply rinse water to the calorimeter. This model features the fixed bomb and bucket design allowing for automated bucket and jacket fill as well as automated vessel fill and rinse. The 6400 requires one minute of operator time per test, allowing a technician to operate up to four calorimeters simultaneously.
Features - Parr Fixed Bomb and Bucket Technology
- Oxygen Charging and Release
- Fixed Bucket
- Fixed Bomb
- 1138 Oxygen Combustion Bomb
... Read More | Ordinary oxygen bomb combustion calorimetry is used to measure the heat of combustion or reaction of materials in oxygen or inert atmospheres. Even for high strength vessels, such as the Parr 1104 Oxygen Combustion Bomb, the conditions necessary to detonate small amounts of highly reactive materialsOrdinary oxygen bomb combustion calorimetry is used to measure the heat of combustion or reaction of materials in oxygen or inert atmospheres. Even for high strength vessels, such as the Parr 1104 Oxygen Combustion Bomb, the conditions necessary to detonate small amounts of highly reactive materials are often difficult to achieve and can result in unpredictable consequences. For example, the conventional heat of combustion of pentaerythritol tetranitrate (PETN) [C5H8N4O12] in oxygen is 1957 cal/g while the heat of detonation in vacuum is 1490 cal/g (a 24% difference).... Read More | The 1341 Calorimeter is an improved version of a plain, static jacket, oxygen bomb calorimeter that has been made by Parr for more than eighty years. It is a reliable calorimeter that can be used for the same broad range of solid and liquid combustible samples as the 6000 Series. Its modest cost andThe 1341 Calorimeter is an improved version of a plain, static jacket, oxygen bomb calorimeter that has been made by Parr for more than eighty years. It is a reliable calorimeter that can be used for the same broad range of solid and liquid combustible samples as the 6000 Series. Its modest cost and simple design recommend it primarily for users whose work load does not justify the purchase of an automatic model. The calorimeter requires no permanent connections. It can be set up and ready to operate in a few minutes and, when not in use, can be disassembled easily and stores on a shelf.
Features - Many Applications
- Good Repeatability
- Quality Construction
... Read More | The 6725 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 The 6725 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.... Read More | The Parr 6755 Solution Calorimeter is a multi-purpose calorimeter for measuring enthalpy changes produced by chemical reactions in solution. Utilizing a unique rotating sample cell and a precise microprocessor-based thermometer, the Parr 6755 Solution Calorimeter provides a moderately priced and The Parr 6755 Solution Calorimeter is a multi-purpose calorimeter for measuring enthalpy changes produced by chemical reactions in solution. Utilizing a unique rotating sample cell and a precise microprocessor-based thermometer, the Parr 6755 Solution Calorimeter provides a moderately priced and easily operated instrument for measuring: Heats of Reactions Heats of Mixing Heats of Solution Heats of Dilution Heats of Wetting... Read More |
| Method | Isoperibol oxygen bomb calorimetry | Oxygen bomb combustion calorimetry | Oxygen bomb combustion calorimetry | Oxygen bomb combustion calorimetry | Solution Calorimetry |
| Temperature Resolution | 0.0001C | 0.0001C | 0.0001C | Inquire | 0.0001°C |
| Measuring Time | 7 tests per hour | 1 test per hour | 2 tests per hour | 2 to 3 tests per hour | Dependent on sample |
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