Sample Preparation Vessels
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Parr Instrument Company 6700 Series Solution & Semimicro Calorimeters 6700 Designing and Building High Precision Calorimeters for 120 Years

Parr Instrument Company Parr Instrument Company is pleased to feature its Series 6700 line of Calorimetric Thermometers, Solution Calorimeters, and Semimicro Oxygen Bomb Calorimeters. These instruments bring the latest in microprocessor based technology to these specialized applications. The same advances in control, display, and data handling developed for the Parr Series 6000 line of Oxygen Bomb Calorimetry have also been incorporated in this line of calorimeters. The Model 6772 Calorimetric Thermometer Founded in 1899 by University of Illinois Professor S.W. Parr, Parr Instrument Company...

Model 6772 Calorimetric Thermometer For precise temperature measurements and calorimetric determinations control. SPECIFICATIONS Model Number: 0.0001 °C Absolute Accuracy w/out Calibration: ± 0.1000 °C Absolute Accuracy w/ Calibration: ± 0.0500 °C Repeatability, Single Point: 6772 Calorimetric Thermometer Displaying Main Menu Screen Balance Communication: This two-channel precision calorimetric thermometer is included with the 6725 Semimicro Oxygen Bomb Calorimeter and the 6755 Solution Calorimeter. It is also used with the Parr 1341 Oxygen Bomb Calorimeter or for other laboratory...

Model 6755 Solution Calorimeter For measuring enthalpy changes produced by chemical reactions in solution. SPECIFICATIONS Model Number: 0.4 Class (1.5 – 5.0 °C rise at or near room temperature) Working Temperature Range: 0.0001 °C Energy Measurement Range: 2 – 1000 calories Energy Equivalent: 100 – 145 Calories/°C Maximum Volume, Solute: 20 mL Required Volume, Solvent: 6755 Solution Calorimeter shown with 6772 Calorimetric Thermometer Network Connection: TCP/IP via Ethernet Dimensions (cm): A Multi-purpose Calorimeter Utilizing a unique rotating sample cell and a precise...

Many Different Reactions Any liquid-liquid or liquid-solid chemical reaction in which heat is evolved or absorbed within a temperature range from 10 to 50 °C can be studied in the 6755 Calorimeter. Heats of Reaction, either endothermic or exothermic, can be determined in many different systems, ranging from simple acid-based reactions to more complicated redox, chelation, hydrolysis, protonation and other reactions. The calorimeter is particularly effective for assays of weak acids and weak bases which do not respond readily to other detection methods. It can also be used for rapid specific...

Model 6755 Solution Calorimeter, continued To start the reaction, a glass push rod is inserted from the top of the calorimeter through the stirring shaft and into a socket in the sample dish. When this rod is pushed downward, the dish slides out of the cell and remains attached to the rod, held at a fixed distance above the bottom of the reaction vessel. In this position the rod and dish rotate with the cell, slinging the reactants into the solution and serving as an additional impeller in the stirring system. Heat leak from the cell to the non-wetted parts of the system is held to a...

Standardization Three different procedures are available for standardizing the calorimeter: Chemical Standardization is readily accomplished using a precise, reproducible exothermic reaction of TRIS — tris(hydroxy methyl)aminomethane — with 0.1 N HCI in a NIST procedure which is described in the instructions furnished with the instrument. A 100-gram bottle of TRIS is furnished with the calorimeter for this purpose. Additional supplies can be obtained from Parr, or the basic reference material may be purchased from the National Institute of Standards and Technology. Comparison...

Model 6725 Semimicro Bomb Calorimeter The 6725 Semimicro Bomb Calorimeter for measuring the calorific value of small combustible samples. SPECIFICATIONS Model Number: 2–3 Operator Time Per Test: 6 – 10 Minutes Precision Classification: 0.4% Class Jacket Type: Compensated, Dewar Flask Oxygen Fill: Manual Bucket Fill: Manual Bomb Model Options: 1109A, 22mL Manual Valve, Semimicro 1109X, 22mL High Strength, Semimicro Balance Communication: 6725 Semimicro Calorimeter shown with 6772 Calorimetric Thermometer TCP/IP via Ethernet Dimensions (cm): The 6725 Semimicro Bomb Calorimeter is a compact and...

Samples are held in a shallow Inconel dish which is supported on an adjustable Ni-Cr loop attached to the oxygen inlet tube. Electrical connections for the firing circuit are made through a connector which slides into the central terminal and bomb support stand. The 1109X High Strength Semimicro Oxygen Combustion Bomb is also available for use in the 6725 Calorimeter. The 1109X is similar in most aspects as the 1109A Vessel but has been specially strengthened to be suitable for testing energetic materials and it is optimized for the measurement of small energy releases. The Oxygen...

Model 6725 Semimicro Bomb Calorimeter, continued Precise temperature measurements in the 6725 Semimicro Calorimeter are taken with a Parr 6772 Calorimetric Thermometer which is described on page 3. In this application, the thermo meter module is included with the calorimeter. Good Precision The precision obtainable with the 6725 Calorimeter will depend primarily upon the amount of energy released by the sample. If the release is less than 100 calories, the deviation from the mean will not exceed 1.0 percent of the measured value. With a 400 calorie release, the deviation will be less than...

6765 Combined Solution and Semimicro Calorimeter For laboratories that want to perform both Solution and Semimicro Oxygen Bomb calorimetry tests, Parr offers the 6765 Combined Calorimeter. This includes the 6772 Calorimetric Thermometer module plus a calorimeter module and conversion parts for both the 6755 Solution Calorimeter and the 6725 Semimicro Calorimeter. This option has been popular with teaching laboratories that wish to include both types of experiments in their laboratory sessions. Conversion Sets The 6729 and 6759 Conversion Sets are also available for users who have one of the...