The COMBIMASS® GA-s hybrid eco is a benchtop analyser with standard gas modules, without graphic display. In the basic version it has two gas modules CH4 and H2S of the hybrid series with the possibility to measure one gas stream. By means of an upgrade option, we are able to increase the measuring range to two streams for gases such as methane, hydrogen sulphide and oxygen. It is mainly used for monitoring the biogas filter upstream of the CHP engine. Choice of plastic housing or, in a more expensive version, stainless steel.