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Count density

Count density --> photon density

The number of counted events recorded in scintigraphy per square centimeter or per square inch of imaged area.

Synonym: count density.

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Re: Bacterial Calculation

... you have 5.5*10^5 cfu/mL (in case you used an aliquot of 1 mL). If you count 85 colonies at a 10^5 dilution then it`s 8.5*10^6 cfu/mL, which is ... need. To get more precise values, you could grow the cells to a higher density than you actually need and dilute them to the desired concentration.

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by EnricoPallazzo
Sun Jan 13, 2013 9:43 am
Forum: Microbiology
Topic: Bacterial Calculation
Replies: 3
Views: 3929

Problem with Lab result

... :roll: The experiment is Enumeration of Bacteria:The standard plate count My results for the Quantitative plating method is: Dilution Bottle ... culture?___I didn't get this answer :oops: Second Part: Optical density determination Dilution --- Optical Density 1:1 --- 30% T; 0.56 A ...

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by Layd33foxx
Sat Feb 18, 2012 5:33 am
Forum: Microbiology
Topic: Problem with Lab result
Replies: 2
Views: 2403

How to measure dry mass?

Easy... Or maybe not. Find a relaible measure of the density of your culture for your algae. It does not matter what you are using, ... the cell density of your culture. And check that it works (do dilutions and count). Once you have that measure the relationship between your cell density ...

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by canalon
Thu Aug 04, 2011 3:04 pm
Forum: Ecology
Topic: How to measure dry mass?
Replies: 17
Views: 29508

DNA Extraction

I did not do cell count, just pipette it from the culture. What is the density of normal OD600 or cell count required to get normal DNA concentration yield?

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by magicsiew
Thu May 20, 2010 1:10 pm
Forum: General Discussion
Topic: DNA Extraction
Replies: 6
Views: 3089

Help with T-Test

... interaction between two algae species. I have data for algae count for species 1, species 2, species 1 (mixed with 2) and Species 2 (mixed with 1) I got the density per ml each week. Ive been counting every week for a total of 3 weeks. How would ...

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by xbocker
Fri Apr 24, 2009 1:58 am
Forum: Microbiology
Topic: Help with T-Test
Replies: 1
Views: 1366
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