• 970-06-00D
  • Not in stock. Call for availability


  • Primary standard fixed points
  • Unique patented design
  • High accuracy
  • Blackbody radiation sources
  • Long flat plateay
  • ITS 90 fixed points

These cells are used to correlate radiation thermometers to the ITS-90 Scale as well as provide the highest accuracy Blackbody Sources available. All Cells contain 99.9999% pure metals and will provide a melt or freeze curve to within ±0.01°C. The Primary Cells used in our larger sources will provide significantly longer plateaus. The results, as seen by a radiation pyrometers, which are slightly sensitive to wall temperature, give uncertainties of better than ±0.25°C. Easy replacement allows one apparatus to work with multiple cells.