Periodic Table
1 : defined as 21 degrees C ± 5 degrees C (70 degrees F ± 10 degrees F). [SEMI F4-90] 2 : in the calibration of mass flow devices, the temperature, in degrees Celsius, specified as a reference for measurement and comparison. In the semiconductor industry, this temperature is defined as 0.0 degrees C. [SEMI E29-93]




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