In the sunny corner of the factory where the ambient temperature reaches 28°C in the shade, we have tested the ability of the Unistat 510w to hold the set-point in a 100-litre Chemglass reactor with 70-litres of DW-Therm to simulate the reaction mass. The stability was recorded at set-points -20°C, 20°C and 100°C. All under “Process Control”. The case study will soon be published on our web site. The graphics illustrate the excellent control capabilities as each set point is held stable under full sunshine.