04072578 is referenced by 75 patents and cites 3 patents.

A multi-chambered module for holding separate samples of nutrient media. A plurality of chambers, with access means into each, is permanently attached to an electrically non-conductive base. Embedded within the base under the chambers is a plurality of electrically conductive leads. Terminal portions at one end of the leads emerge in spaced pairs into each chamber forming electrodes therein. At the other end of the leads terminal portions are exposed for contact with an electrical source. A signal passed through the electrodes in galvanic contact with media permits the impedance thereof to be determined, with changes of impedance directly associated with microorganism growth therein.

Title
Multi-chambered module for use in monitoring growth of microorganisms
Application Number
633213
Publication Number
4072578
Application Date
April 22, 1976
Publication Date
February 7, 1978
Inventor
James H Fleming
Palo Alto
CA, US
Melvin Rudin
Los Altos
CA, US
Takeshi Omura
Los Altos
CA, US
Paxton Cady
Los Altos
CA, US
Agent
Phillips Moore Weissenberger Lempio & Majestic
Assignee
Bactomatic Corporation
CA, US
IPC
C12K 1/04
View Original Source