Abstract
A conduction type calorimeter has been designed to chase microbial growth in batch system. The calorimeter is of a twin structure having thermopile plates as a temperature sensor. The heat evolution during the microbial growth at a required temperature can be observed as an output-voltage generated at thermopile terminals with a sensitivity of 58.5mV K-1 A stainless steel cell with a volume of 300cm3 serves as a culture cell which is capable of being autoclaved prior to the initiation of calorimetric run, taking out from the calorimeter body. Because of the twin structure, the apparatus works with sufficient stability in detecting small heat evolution for long duration. Its operation has been demonstrated with the growth of Sacch. cerevisiae grown on liquid synthetic medium under anaerobic condition.
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