The Rubotherm is used to determine solubility or pure gases in ionic liquids. The Rubotherm is a magnetic suspension balance with a working range of high vacuum to 500 bar and -200 to 350ºC with a mass precision of 2 micrograms.
The Balance records the weight change of the IL sapmpe upon gas absoroption. Since the balanance is magnetically coupled to the sorption cahmber, the microbalance itself is not exposed to the gas of interest. This allows the use of corrosive gases such as SO2 without harming the delicate microbalance.