Practical and reliable solution for on-site Jar Test Digital portable flocculators in 4 positions with brushless motor, timer and central lighting system to allow standard conditions to be met during Jar Testing in water treatment plants. Identical conditions for all the 4 positions for comparable results Digitally selectable speed from 10 to 300 rpm Settable timer for unattended operation Stirring rods adjustable in height without tools Powerful brushless motor and SpeedServo technology Central light to simplify sample observation Practical handle for on-site testing at water treatment plants Strong resistance to chemicals and corrosion