Primary Fixed Point Calibration Facility

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Overview

Fixed point cells are the most accurate devices available for defining temperature scales. These cells are designed to realize the liquid–solid equilibrium temperatures of high-purity metal elements, ensuring precise calibration of thermometers as per the ITS-90 (International Temperature Scale of 1990).

Typically, such high-accuracy calibration facilities are available only at National Metrology Institutes (NMIs). However, FARE Labs is equipped with an advanced Primary Fixed Point Calibration Facility, offering calibration services with high accuracy and traceability.

Calibration Range & Best CMC in India

Boiling Point of Liquid Nitrogen: −195.79 °C
Triple Point of Mercury: −38.8344 °C
Triple Point of Water: 0.01 °C
Freezing Point of Gallium: 29.7646 °C
Freezing Point of Tin: 231.928 °C
Freezing Point of Zinc: 419.527 °C
Freezing Point of Aluminium: 660.323 °C
Freezing Point of Silver: 961.78 °C

Best Calibration and Measurement Capability (CMC):
−196 °C → 5 mK
−38 °C → 2.4 mK
0.01 °C → 1.0 mK
29 °C → 2.5 mK
231 °C → 3.6 mK
419 °C → 4.3 mK
660 °C → 5.7 mK
962 °C → 8.2 mK

SPRT (Standard Platinum Resistance Thermometers)
SSPRT (Secondary Standard PRTs)
PRTs & HTPRTs (High Temperature PRTs)

Parameters Calibrated:
Temperature
Resistance

Calibration Method:
Fixed Point Calibration as per ITS-90
Direct realization of equilibrium temperature points
High repeatability and stability

Fixed Point Cells (ITS-90 compliant)
Fluke Fixed Point Bath
Standard Platinum Resistance Thermometers (SPRT)
High Temperature PRT (HTPRT)
Fluke Super Thermometer

Traceability:
All calibrations are traceable to National / International Standards, ensuring reliability and compliance.

Primary level Fixed Point Calibration Facility
Calibration as per ITS-90 standards
Best CMC in India for fixed point calibration
Highly skilled and experienced technical team
Advanced infrastructure & precision instruments
NABL compliant processes and traceability
Suitable for R&D labs, aerospace, pharmaceuticals, and calibration labs

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