Parr offers several special purpose oxygen vessels for calorimetry and analytical applications in sizes from 22 to 2000 mL. Inquiries for other applications are welcome.
1104 High Strength Vessel with Cage and Loop
The 1104 is a 240 mL, extra heavy-duty bomb for use with samples that burn with extreme violence. It will handle samples that liberate up to 12,000 calories per charge, using oxygen charging pressures up to 45 atm. This bomb should be used in place of the standard bomb when testing explosives, gun powders and fast-burning propellants, or when working with materials whose combustion characteristics are unknown or unpredictable. Samples to be burned in the 1104 Oxygen Bomb are held in a thick-walled capsule within an optional combustion cage which serves to muffle the shock forces produced by high-energy samples.
1104B High Strength Vessel with Loop
The 1104B High Strength Vessel with Loop is designed for testing materials that do not produce the shock forces generated by explosive samples.
The 1104B is identical to the 1104 except that it does not include the combustion cage and heavy duty capsule necessary for testing explosive samples.
1104C High Strength Vessel with Vacuum Adaptation
The 1104C High Strength Vessel with Vacuum Adaptation is designed for testing explosives in a vacuum.
It is not accurate to test the amount of energy generated in an explosion when oxygen is present as the end products of the explosion will also be combustible. For example, any free Carbon and Carbon Monoxide will react with oxygen to form Carbon Dioxide and release an indeterminable amount of heat that did not come from the initial composition being tested. It is usually recommended to use 5 atm of Nitrogen or Argon environment through a fill and flush sequence in the 1104 High Strength Vessel with Cage and Loop to overcome this problem.
For those that would prefer to test in a vacuum there is the 1104C High Strength Vessel with Vacuum Adaptation. The 1104C is identical in specifications to the 1104. The only change in the 1104C is that the inlet valve on the vessel has been modified to allow for a vacuum to be pulled.
Testing Larger Samples
The 1104 High Strength Vessel is intended for samples of up to 1 gram not liberating more than 12,000 calories per sample. For testing up to 25 grams of high explosives per sample see the Parr Detonation Calorimeter.Contact Us