ITS-90 Temperature standards

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The defining instruments of the ITS-90 (International Temperature Scale of 1990) are Standard Platinum Resistance Thermometers (SPRTs) and ITS-90 fixed-point cells. SPRTs are calibrated in fixed-point cells to provide the highest possible temperature accuracy. Primary standards offered by Fluke Calibration include: long-stem SPRTs; capsule SPRTs; triple point of water cells; metal fixed-point cells; maintenance baths and maintenance furnaces for fixed-point cells; standard resistors.

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5686-B Glass Capsule SPRT
Fluke Calibration's 5686 SPRT covers temperatures from –260 °C to 232 °C. It complies completely with ITS-90 & is small yet reliable & stable....
5698-25 Working Standard SPRT
5698-25 SPRT from Fluke Calibration meets ITS-90 SPRT guidelines, has a drift rate of 0.003 °C & covers a temperature range from –200 °C to 670 °C....
5699 High-Temperature Metal-Sheath SPRT
Fluke Calibration's 5699 SPRT has a protective sheathing material that allows use in calibration furnaces or calibration baths with high temperatures of up to 670 °C....
5901 Triple Point of Water Cells
5901 triple point water cells from Fluke Calibration are an easy-to-use and inexpensive standard with uncertainty better than ± 0.0001 °C....
5960A Triple Point of Argon System
Fluke Calibration 5960A calculates argon triple point using a reproducible process, produces a 30-hour temperature plateau & increases SPRT calibration efficiency....
ITS-90 Fixed-Point Cells
ITS-90 fixed-point cells from Fluke Calibration is constructed in ultra clean labs, using high-density, high-purity graphite crucibles containing metal samples with purity of at least 99.9999 %....
Mini Fixed-Point Cells
Mini fixed point cells from Fluke Calibration are the least expensive, easiest to use & eliminate the need for comparison calibrations. Request a quote today!...
6331/7341/7381 Deep-Well Compact Baths
Calibration baths from Fluke Calibration offer high stability, flexibility , and are a preferred choice of National Metrology Institutes. Contact us today for more information....
7008/7037/7012/7011 Refrigerated Temperature Calibration Baths
7008/7037/7012/7011 refrigerated temperature baths from Fluke Calibration provide excellent stability (±0.0007 °C) & uniformity (±0.003 °C)....
7312 Triple Point of Water Maintenance Bath
Maintain triple point of water cells for weeks with the Fluke Calibration 7312 bath. Offers high stability for fixed-point temperature calibrations....
9114, 9115A, 9116A Freeze-point furnaces
Fluke Calibration 9114/9115A/9116A offer highly accurate and stable temperature standards for ITS-90 fixed-point calibration....
9117 Annealing Furnace
9117 Annealing furnace from Fluke Calibration guards against contamination, anneals both SPRTs & HTPRTs & is fully programmable....
9230 Gallium Cell Maintenance Apparatus
Fluke Calibration 9230 Gallium Cell - Inexpensive & easy-to-use fixed-point maintenance apparatus. Request a quote today!...
9260 Mini Fixed-Point Cell Furnace
Fluke Calibration 9260 Mini Fixed Point Cell -Inexpensive & easy-to-use fixed-point maintenance apparatus. Request a quote today!...
7196B LN₂ Comparison Calibrator
7196 LN2 Comparison Calibrator from Fluke Calibration is simple to use and offers low-cost calibrations to –196°C. Request a quote today!...
742A Resistance Standards
742A Resistance Standards have excellent temperature stability that allows them to be used from 18°C to 28°C for resistance calibration. Request a quote....