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. 1978 Mar;7(3):265-72.
doi: 10.1128/jcm.7.3.265-272.1978.

Electrical impedance measurements: rapid method for detecting and monitoring microorganisms

P Cady, S W Dufour, J Shaw, S J Kraeger

Electrical impedance measurements: rapid method for detecting and monitoring microorganisms

P Cady et al. J Clin Microbiol. 1978 Mar.

Abstract

A conceptually simple and east-to-use technique is described that uses continuous impedance measurements for automated monitoring of microbial growth and metabolism. The method has been applied to a wide range of microorganisms. Optical clarity is not required. The sensitivity and reproducibility of the method are demonstrated. The mechanism whereby microbial growth alters the impedance of the medium is discussed, as well as potential applications of the method to clinical microbiology.

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