The gallium melting-point standard: its role in manufacture and quality control of electronic thermometers for the clinical laboratory
Sostman, H.E.
Clinical Chemistry 23(4): 725-732
1977
ISSN/ISBN: 0009-9147 PMID: 844168 Document Number: 110280
I discuss the traceability of calibration of electronic thermometers to thermometric constants of nature or to the National Bureau of Standards, form a manufacturer's basic standards through the manufacturing process to the user's laboratory. Useful electrical temperature sensors, their advantages, and means for resolving their disadvantages are described. I summarize our development of a cell for realizing the melting phase equilibrium of pure gallium (at 29.770 degrees C) as a thermometer calibration fixed point, and enumerate its advantages in the routine calibration verification of electrical thermometers in the clinical chemistry laboratory.