The GRIMM PMP CPC models 5430 and 5431 are high accuracy stationary condensation particle counters for automotive emission measurements, complying to the GPRE particle measurement program (PMP) for Euro 5 and 6 regulations. The feature fast single particle counting up to 50 000 particles /cm³, a high number concentration linearity with an R² ≥ 0.98 and false background counts < 0.001 p/cm³.