The apparatus consists of test cup, lid with handle, removable cup cover with spring operated rotating shutter having pilot jet and flexible shaft. Electrically heated with energy regulator control suitable to operate on 1220 volts A.C. supplied with thermometer. b) –do- but with VOLTAGE VARRIER c)–do- but SEMI AUTOMATIC MODEL with DIGITAL TEMP. CONTROLLER AND AUTOMATIC DIPPING CYCLE SYSTEM OPTIONAL ACCESSORIES: a) Motor variable speed stirrer can be fitted with flexible shaft at an extra charge.