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The Succinonitrile Triple-Point Standard: A Fixed Point to Improve the Accuracy of Temperature Measurements in the Clinical Laboratory

B W Mangum

Clin Chem. 1983 Jul;29(7):1380-4.

PMID: 6861344

Abstract:

In an investigation of the melting and freezing behavior of succinonitrile, the triple-point temperature was determined to be 58.0805 degrees C, with an estimated uncertainty of +/- 0.0015 degrees C relative to the International Practical Temperature Scale of 1968 (IPTS-68). The triple-point temperature of this material is evaluated as a temperature-fixed point, and some clinical laboratory applications of this fixed point are proposed. In conjunction with the gallium and ice points, the availability of succinonitrile permits thermistor thermometers to be calibrated accurately and easily on the IPTS-68.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AS212789 Freezing Point Standard Freezing Point Standard Price
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