The most obvious way to measure microbial numbers is using a microscope for Sang

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The most obvious way to measure microbial numbers is using a microscope for Sanger spectrophotometer Coulter counter counts A special slide calleda known volume of culture. counting chamber is used to count cells in a plate counts Cells can be stained and then counted by interrupting a laser beam as they pass through a centrifugation Another machine for counting cells, the through a pore change electrical currents. direct detects when cells moving Petroff-Hauser Viable counting methods often use on the surface of agar plates. where diluted cultures are spread turbidity color Cells from very dilute samples are often concentrated by plating before most probable flow cytometer colony forming units Each cell spread on the plates that produces a colony is counted and the number reported as While plating techniques are valuable another viable counting method, analysis, can be used when cells can not be cultured on solid media. filtration A simple but indirect assay of culture density uses a spectrophotometer to measure

Explanation / Answer

Answers

1. Direct
2. Petroff Hausser
3. Flow cytometer
4. Coulter counter
5. Plate count
6. Centrifugation
7. Colony forming units
8. Spectophotometer
9. Turbidity

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