In gas pretreatment, condensate accumulates when handling sample gas. Condensation always occurs when moist sample gas is cooled. On one hand, condensation is undesirable when it causes cold bridges in the sample gas lines. On the other hand, it is necessary to precipitate moisture to protect the measuring elements of the analyzer from damage and/or to stabilize measurement results. Since, in suction mode, the sample gas is typically conveyed by the analysis system, condensate must be removed via pumping. For this purpose, peristaltic pumps are particularly suitable. As required by the system, the sample gas system must be protected from external air intrusion, and high durability against often highly corrosive condensates must be ensured due to the hose materials used. The pump series CPsingle and CPdouble are specifically designed for these demanding conditions.