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.
