Stirrer material of construction: Glass, Stainless Steel or PTFE Lined.Stirrer Design: Impeller stirrer with blades, Vortex stirrer, Propeller Stirrer & anchor Stirrer.Stirring Drive: Non-flameproof or Flameproof stirrer drive, 192 RPM with Variable Frequency Drive.Stirring Assembly: Stirring Assembly with bellow seal or with mechanical seal.