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00:00:41 1 Principle of operation
00:05:03 2 Instrumentation
00:06:16 3 Applications



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Speaking Rate: 0.8548587941307064
Voice name: en-AU-Wavenet-B


"I cannot teach anybody anything, I can only make them think."
- Socrates


SUMMARY
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Impedance microbiology is a microbiological technique used to measure the microbial number density (mainly bacteria but also yeasts) of a sample by monitoring the electrical parameters of the growth medium. The ability of microbial metabolism to change the electrical conductivity of the growth medium was discovered by Stewart and further studied by other scientists such as Oker-Blom, Parson and Allison in the first half of 20th century. However, it was only in the late 1970s that, thanks to computer-controlled systems used to monitor impedance, the technique showed its full potential, as discussed in the works of Fistenberg-Eden & Eden, Ur & Brown and Cady.

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