Confirming the accuracy of the diode laser pyrometer measurements with from Arrhenius data calculated from incremental heating of single air abraded spheres of Kalsilite glass. Heating steps are three minutes. The temperature of the step is calculated by weighting each 1 second temperature integration by an exponential function that simulates the diffusion behavior of silicates: Exp[-25,000/RT]. In this way, only the high-temperature steps near the set point actually matter. The duration of the heating step is calculated from the time that the temperature is within 2 siggma of the weighted mean temperature as calculated above.