Subsequent to a “high sensitivity” calibration and prior to sample testing it may be prudent to carry out a drift check to verify the calibration by measuring thermal drift. Drift checks can quickly and easily check that the instrument has been adequately calibrated for the accuracy required. Drift checks are always run with an empty bomb and measure the change in calorimeter temperature as a function of time.
An example of a drift check is shown below. This check was carried out after
calibration at 0.005°C/min.
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Reference:
ARC Technical Information Sheet No. 72, Thermal Hazard Technology, UK
