Water Triple point cell

The Water Triple Point is the most important fixed point, the only point common to the ITS-90 and the Thermodynamic Temperature Scale. It is an essential reference point for every temperature laboratory. The Jarrett-Isotech cells are the best standard, all cells are not the same, accept no inferior device.

Premium Water Triple Point Cells - Borosilicate Glass	These Premium Cells can be calibrated to an uncertainty of +/- 0.000070°C (0.07mK) A11-50-270, A13-50-270, B11-50-270, B11-65-270, B13-65-270, B16-65-270 also available in Quartz Glass.
Reproductilibity	The equilibrium temperature of a cell will repeat to within ±0.000,02°C of the mean equilibrium temperature.
Stability	After equilibrium is reached, the mean temperature of the inner melt of an ice mantle will remain constant to within ±0.000,01°C for as long as the mantle can be preserved (up to 90 days in some instances).
Further Laboratory Water Triple Point Cells	These Cells have shorter immersion depth and can be calibrated to an uncertainty of ±0.000100°C (0.1mK). B12-40-210, B12-46-210.
Accuracy	The equilibrium of temperature of the Jarrett-Isotech Triple Point of Water Cell is within ±20μK of the 2005 definition as described in CCT/05-07/rev(2). Isotopic Analysis can be provided to give the exact composition within ±3μK.