A thermocouple calibration process was performed by
comparing the thermocouple reading when fully submerged in
crushed ice and boiling water with the standard water freezing and
boiling temperature respectively [17]. Freezing or water boiling
standard temperature was considered (to 2d.p.) as those at standard
atmospheric conditions (e.g. 1 atm) where water boils at
99.98 C1 and freezes at 0 C [18].