Water and all water like liquids which are not flammable, corrosive or toxic.
With the following definitions we are able to correct the influence of media with higher viscosity than water (= media viscosit y > 1.8 cST) in order to reach a measuring accuracy of 3% fs in the range of 1.8 – 4 cST and of 4% in the range of 4 – 14 cSt (υ= viscosity in cSt).