The Isotech Hydra range of calibration baths has proved very successful since their introduction in 2003.

The Orion range has been introduced to fit alongside the Hydra models. The Orion calibration baths offer deeper calibration volumes than the Isotech Hydra series, with world class temperature stability. There is a high temperature model (30°C to 300°C), and two models with built-in refrigeration (-40°C to 125°C) and (-80°C to 125°C).

These deep stirred liquid baths are suitable for the low uncertainty calibration of long thermometers, including liquid-in-glass and extended-length SPRTS. The Orion high-temperature oil bath has sufficient depth, 470mm (18.5in), to accommodate Isotech’s largest Water Triple Point Cells, providing a cost-effective sub mK calibration system. There are accessories to hold mercury, water, gallium, and indium ITS-90 Fixed Point Cells.

Isotech temperature baths have always been designed for thermometer calibration, setting the standard for immersion depth versus filling costs. As the Orion high-temperature oil bath requires just 8.5L of fluid, it offers significant cost savings, both initial and ongoing running costs, when compared to other, larger volume baths. In operation, the liquid level is within 10mm of the top lid, allowing calibration of liquid-in-glass thermometers without the need for complicated accessories.