The 1121 by Parr Instrument Company is an Oxygen bomb calorimetry which is used for users that requires an analysis of slow burning cellulosic materials. With this unit, the user can able to transfer large sample for the repeatability of the sampling process. It comes with a weight capacity of 10 grams and uses a 20 atm oxygen to ensure the sample is secured. The bomb can hold vacuum which the ideal tool for determining trace amounts of tritium, carbon-14 or heavy metals in vegetable matter.