The Accelerating Rate Calorimeter is unique for its unparalleled adiabaticity, its sensitivity and its sample universality. Coupled to this its ease of use and simple data analysis make it accessible and usable by all Expansion Thermal Hazard Technology Accelerating Rate Calorimeter has therefore been designed to fulfil the requirements of an adiabatic calorimeter system but with the ability for ongoing enhancement and development. Options are available; a Vent Sizing Unit is available to allow low ø testing, determination of reaction types and for blow-down tests for the determination of relief vent area. There is samplestirring option, a sample dosing option, a gas collection option and a cryogenic option; there is a gas scrubber system to allow safe removal and disposal of potentially toxic gases. 加速量熱儀（ARC）