Also I do use a fan in the incubator, A 3 x3 muffin fan while the heat is on and a cpu fan when the heat is off. Otherwise the heat stratifies with significant cooling at the bottom Ralph Snail Instruments wrote: > Perhaps you can loosen your specifications on the temperature precission. > unless you include a fan to equalize the temperature distribution. > > Josef > > ====================================================================== > Electronical devices for chemical laboratory, custom electonics design > ---------------------------------------------------------------------- > Snail Instruments Josef Hanzal > Vojanova 615 phone/fax: +420-311-24433 > 266 01 Beroun e-mail: snail@iol.cz > Czech Republic URL: http://www.vitrum.cz/snail/ > ======================================================================