The Hei-TORQUE Expert 200 overhead stirrer is a user-friendly, low-noise laboratory mixer built for versatile stirring tasks. This Hei-TORQUE Expert 200 overhead stirrer delivers constant power for viscosities up to 100,000 mPas and volumes to 50 liters, with a wide speed range of 10–2,000 rpm and maximum torque of 200 Ncm. Its touch start/stop function and 2.4 inch digital display ensure simple, safe operation, while the torque trend display provides real-time process monitoring. Suitable for many stirring tools, the quick-action chuck (10.5 mm) allows fast setup and secure tool changes. Hei-TORQUE Expert 200 Overhead Stirrer Features Speed range: 10–2,000 rpm Max torque: 200 Ncm Viscosity: up to 100,000 mPas Maximum stirring volume: 50 L (H₂O) 2.4 inch process display with torque trend indication Safety-related start/stop touch function Minimal noise: below 50 dB Sealed IP54 housing for fume hood and reactor use Quick-action chuck, diameter 10.5 mm Compatible with multiple stirring tools Overtemperature sensor for safety Technical Data Table Specification Value Speed 10–2,000 rpm Maximum torque 200 Ncm Max viscosity 100,000 mPas Max volume 50 L Display 2.4 inch digital Safety class IP54 Noise level