Skip to main content
Press Enter
Fluke Calibration

ITS-90 Fixed-Point Cells

Every ITS-90 fixed-point cell with the best uncertainties commercially available

This product is no longer available. Contact us at 800-567-8686 for alternative solutions.

Have questions? We're here to help!
Have questions? We're here to help!

Fluke Calibration scientists have designed and tested ITS-90 fixed-point cells for many years. Not only do we manufacture all the major fixed points, our metrologists have written extensively on the theory and use of cells and have created new designs covering a range of applications no other company can match. Our testing of fixed-point cells is also unmatched. The scope of our accreditation includes the testing of ITS-90 fixed-point cells. Each cell may be purchased with this intercomparison option, which includes comparing the equilibrium value of your cell against that of a reference cell.

• Best cell uncertainties commercially available
• Every ITS-90 fixed point available from argon to copper
• Plateaus last days (gallium for weeks and TPW for months)
• Manufactured and tested by Fluke Calibration’s primary standards scientists

Model

Fixed Point

Style

Assigned Value (°C)

Outside Diameter

Inside Diameter

Total Outside Cell Height

Depth

Cell Uncertainty

(mK, k = 2)

Certification

(mK, k = 2)

5900E

Mercury

Stainless Steel

–38.8344

31 mm

8.2 mm

470 mm

200 mm

0.2

0.25

5904

Indium

Traditional Quartz Glass

156.5985

48 mm

8 mm

285 mm

195 mm

0.7

0.7

5905

Tin

Traditional Quartz Glass

  • Thumbnail of document Manual - ITS-90 Fixed-Point Cells
    Download

    Manual - ITS-90 Fixed-Point Cells

    Download
  • Thumbnail of document Manual - ITS-90 Fixed-Point Cells
    Download

    Manual - ITS-90 Fixed-Point Cells

    Download
  • Thumbnail of document Manual - ITS-90 Fixed-Point Cells
    Download

    Manual - ITS-90 Fixed-Point Cells

    Download
  • Thumbnail of document Manual - ITS-90 Fixed-Point Cells
    Download

    Manual - ITS-90 Fixed-Point Cells

    Download

Accessories

Request a Service Quote

Get a customized quote for calibration, validation, repair, or training services designed to keep your instruments accurate and compliant.
Learn more

Browse By Brands

Uncover the brands that set the standard for quality and dependability in every industry we serve.
Learn more