Built-in rotisserie holds 1 carousel rack and rotates ampules during digestion; rotating action will give c.O.D. Values closer to theoretical c.O.D. But 5 to 15 pct higher than standard method c.O.D.; heating coils on oven side walls and safety set; power req. 120 vac, 10 amps, 1000 watts, 50 or 60 hz; dimensions-exterior 19 x 19 x 26 inches, interior dim. 13 x 15 x 11-1/2 inches; temp stability porm 1 deg. C