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cfu/ml = (no. of colonies x dilution factor) / volume inoculated
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What do you mean by enumeration of bacteria?
Enumeration of bacteria is counting the number of viable bacterial cells present in 1g or 1ml of a sample. The bacterial counts are usually expressed in CFU/g or CFU/ml. CFU-Colony Forming Units.
How do you convert cfu per ml to count per ml?
0,3 IFU/ml
Pasteurized milk is allowed 20000 cfu ml how many colonies would be present if 1ml of a 10 -3 dilution was plated is 20000 cfu ml a health hazard?
20. No it is not a health hazard as raw milk has 50000 cfu/ml and can be consumed by humans.
What is 1000 cfu in water colony testing?
1000 colony forming unit/ml in water...500 cfu/ml is considered standard for acceptable drinking water
If you have 0.05 ml of an undiluted culture at a concentration of 3.6x10 6 CFU ml You then add 4.95 ml sterile diluent What is the dilution factor and what is the final concentration of cells?
the answer is Zero
What does 1000 to 10000 cfu ml gram positive flora mean?
it is the amount of bacteria in the culture....1000-900 colony forming units per ml
What is S Acin in a urine culture report?
what does a report mean when is say 1,000-10,000 CFU/ml of Gram positive cocci and Gram negative bacilli. Is this a positive culture?
How do i calculate Biologic log reduction?
Microbial load (cfu/g or cfu/ml) can be expressed as log10. So, if you have 100,000 microbes that is 5 log, 10,000 microbes is 4 log, 1,000 is 3 log, 100 microbes is 2 log and 10 microbes is 1 log. Now, if you went from 100,000 microbes cfu/g to 10,000 microbes cfu/g that would be a 1 log reduction (5 - 4 log). If you went from 100,000 to 32,000 that would be a 0.5 log reduction (5 - 4.5 log) and so on. I hope this helps St John Hall
What is the formula for 368 mL?
There is no ' formula ' as such. - It is a volume of something.
What unit of measurement is used for bacterial colonies?
Many aspects of bacterial colonies may be measured for example colony size or appearance can be useful. The measurement which is perhaps the most useful however, is the colony forming units per ml (or cfu) which indicates how many bacterial cells are present to form colonies on the medium. This is a relatively simple calculation which is done by initially counting the number of colonies present on the medium. this number is then multiplied by the inverse of the dilution used. For example, if the dilution of the bacterial broth was 10-2 and the number of colonies on the medium was 60, then the calculation would be 60 x 102. This result is then divided by the volume of sample used in ml and will give you the number of colony forming units per ml present on the medium. Ben McD
What is total viable count of bacteria?
Total Viable Count of bacteria gives a quantitative idea about how much is in a sample. The calculation represents the number of colony forming units (cfu) per g ( or per ml).
What is the formula to convert ml to oz?
For a rough count, divide ml # by 28. -It will be close.
