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ISO 17025 Calibration of Fixed Point Cells

  • Isotech are able to calibrate Fixed Point Cells from the Argon Point to Silver Point, – 189.3442°C to +961.78°C
  • Popular Models calibrated include Pond K18, K23, K29, K38, Fluke 5901, 5900E, 5943, 5904, 5905, 5906, 5907, 5908
  • Choose Isotech for world leading calibration uncertainties
  • Clear and simple certification – the uncertainty stated on the certificate is for the piece of
    equipment that has been calibrated.
  • Unparalleled experience
  • All work carried out in our UK ISO 17025 Accredited Laboratory

Calibration Uncertainty Summary – View our full schedule here


Premium Service Standard Service
mK, k = 2 mK, k = 2
Ar Argon -189.3442°C 0.8
Hg Mercury -38.8344°C 0.2 1
Wtp Water Triple Point 0.01°C 0.070 0.5
Ga Gallium  29.7646°C 0.070 1.0
In Indium 156.5985°C 0.65 2.0
Sn Tin 231.928°C 0.6 2.0
Zn Zinc 419.527°C 0.9 2.0
Al Aluminium  660.323°C 1.1 6.0
Ag Silver  961.78°C 2.0

Get in touch with us to discuss your calibration needs.


We are accredited by the UK accreditation body, UKAS to the International Standard, ISO 17025. Our certificates have international legal status.
Accredited for electrical and temperature measurements since 1986.

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