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203.8 - Defining Fixed Point, International Temperature Scale of 1990, ITS-90 (solid forms)

These SRMs are intended for use in preparing defining fixed points of the International Temperature Scale of 1990, ITS-90.

For further information see SP 260-138

PLEASE NOTE: The tables are presented to facilitate comparisons among a family of materials to help customers select the best SRM for their needs. For specific values and uncertainties, the certificate is the only official source.


- Certified values are normal font
- Reference values are italicized
- Values in parentheses are for information only


Detail - Detail    Certificate - Certificate    Report of Investigation - Report of Investigation    MSDS - MSDS    Data Files - Data Files    Questionaire - Questionnaire


  SRM Description Unit Size     Temperature (in °C)
Detail Certificate MSDS 740a
Out of Stock
Zinc Freezing Point Standard 419.527 °C
200 g   419.527
Detail Certificate MSDS 741a
Now Selling
Tin Freezing-Point Standard
200 g   231.928
Detail Certificate MSDS 1746
Now Selling
Silver Freezing-Point Standard
300 g   961.78