Fitzpatrick, Cella, Harper & Scinto
Method and apparatus for measuring microorganism activity
 The microbial activity in a liquid medium is determined by measuring the electric current values or potential values generated by the microorganisms. Also disclosed herein is apparatus for carrying out such measurement comprising two electrodes or two electrolytic electrode systems constructed and arranged to be immersed in a culture liquor. 
Kyowa Hakko Kogyo Co., Ltd.
C C
C12Q C12Q
additional inventional
Isao Shuichi
Karube Suzuki