Thermocouple calibration devices from NPL
The melting point cell consists of a high purity graphite crucible containing an ingot of cobalt-carbon alloy constructed from cobalt and carbon each having a purity of at least 99.999%.
The cells are supplied with an NPL certificate showing the melting temperature (uncertainty ?? 0.55 ??C, k = 2) of the cell determined, traceable to ITS-90, by radiation thermometry.
For more information visit the NPL webpage at: http://www.npl.co.uk/temperature-humidity/products-services/supply-of-cobalt-carbon-eutectic-fixed-point
National Physical Laboratory
Teddington, Middlesex, TW11 0LW
Tel: 020 8977 3222
Notes: Cell image courtesy NPL