LABORATORY STIRRER WITH NOISE LESS UNIVERSAL MOTOR, MAXIMUM SPEED 4000 RPM WITH ELECTRONIC VARIABLE SPEED REGULATOR 200 TO 4000 RPM. THE STIRRER SHAFT IS OF STAINLESS STEEL WITH 3 BLADED PROPELLER HAVING 37MM. SWEEP, SHAFT AND STIRRER COUPLED BY MEANS OF SIMPLE BUSH COUPLING WITH GRUB SCREW. STIRRER IS MOUNTED ON A ADJUSTABLE HEAVY STAND..