Shaking motion orbital water bath incubator shaker is of sturdy built with an outer layer crafted with mild steel sheet appropriately treated with a powder layer and inner chamber made constructed with premium stainless steel materials grade 304. The divide found between the within and beyond chamber is filled with effective insulation. Temp. Is managed by microprocessor pid with dual, Temp. Controller display of temp. Process & set value . A variable speed motor is fitted to provide shaking of the tray, The velocity of the the motor is able to varied through a stepless electronic regulator fitted in the panel. The shaking tray moves on four wheels / balls reciprocating, Eccentric cam orbital . With digital rpm indicator in refrigerated model, Temp. Below ambient is achieve by hermetically sealed cfc free compressor isi mark placed below the water bath with other refrigeration accessories. For above ambient temp. Stainless steel immersion type heating elements are included within the bath. The bath is provide with a stainless steel pyramidical shaped lid and a drainplug. Specification model shaking tray temp. Range rpm shaking type mmi, 100 1 275 x275 x 75 ambient, 5 c, 100 c, 0. 2 c 30, 150 reciprocating 2 275 x 275 x 150 3 400 x 300 x 150 mmi, 100c 400 x 300 x 150 10 c, 90 c, 0. 2 c 30, 150 reciprocating mmo, 200 400 x 300 x 200 ambient, 5 c, 100 c, 0. 2 c 30, 180 orbital mmo, 200c 400 x 300 x 200 10 c, 90 c, 0. 2 c 30, 180 orbital