Flocculator has been specially designed for use in water treatment plants to correctly estimate the dosing of alum and other coagulants for water and sewage treatment. It provides identical test conditions for all samples. The illuminated base consists of a fluorescent tube mounted below a translucent plastic plate to provide diffused cold light through flock samples. Flocculated consists of geared continuous run heavy duty 1/20 H.P. variable speed motor from 10 to 100 RPM with built-in speed control. 5.5. stirring rods are provided with adjustable spacers to adjust the depth of stirring paddles. The stirring shaft can be removed without disturbing other stirrers. This unit is supplied without beakers to work on 220/230 Volts A.C.