Hart baths can be operated using fluids with up to 50 centistokes viscosity. This gives you additional usable range in the lower temperature levels of the fluid. Some baths advertised as calibration baths require fluids with 10 centistokes or less viscosity to operate properly. The usable ranges in our table on the previous page assume the use of a Hart bath. In addition to range and viscosity issues, there are a number of other issues to consider when choosing a bath fluid.
Atmospheric pressure affects the usable ranges of some fluids.
The temperatures quoted are at sea level. When the flame is removed, the vapor will stop burning. Electrical resistivity is greater than 20 M W -cm. The MSDS available are in Adobe Acrobat format and require the Acrobat Reader to view.