The present disclosure includes to an analysis device for determining a measurand representing a silicate concentration in a sample liquid, including a housing divided into an electronics region and a fluidic region, wherein the electronics region is separated from the fluidic region by at least one wall. In the fluidic region are a measuring cell, a sample feed line connected to the measuring cell, at least one liquid container having a liquid therein and connected to the measuring cell via a liquid line, and at least one pump configured to transport at least a portion of the liquid from the liquid container into the measuring cell, in which the sample feed line is connected to an over-pressurized container containing the sample liquid, where the container is arranged outside the housing. The electronics region includes an electronic control system configured to control the operation of the analysis device.