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because one bacterium takes 20 minuets to replicate.

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Q: But not after 5min using phenol coefficient why?
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The lower the phenol coefficient is the stronger the disinfectant is?

No,, the higher the phenol coefficient the stronger the disinfectant


Phenol coefficient test in microbiology?

Phenol coefficient test is best known screening test in which potency of a disinfactant is compared with that of phenol. A series of a dilutions of phenol and the disinfactant being tested are prepared. A standard amount of Salmonella tyhpii and Staphylococcus aureus are added to each dilution; the dilutions are then placed in a 20 to 37oC water bath. At 5-minute intervas, samples are withdrawn from each dilution and used to inoculate a growth medium, which is incubated for two or more days and then examined the growth. If there is no growth in the growth medium, the dilution at that particular time of sampling killed the bacteria. The highest dilution that kills the bacteria after 1o min. expousre, but not at 5min. is used to calculate the phenol coefficient. This is done by dividing the resiprocal of the appropriate phenol dilution.


Evaluate the effectiveness of a disinfectant with a phenol coefficient of 40?

A disinfectant with a phenol coefficient of 40 is highly effective compared to phenol as a standard. It means that it is 40 times more effective than phenol at killing microbes. This high coefficient indicates strong germicidal properties and efficiency in disinfecting surfaces.


What increase absorbance of phenol in ethanol?

Possible factors that can increase the absorbance of phenol in ethanol are: increasing the concentration of phenol in the solution, using a higher path length cuvette for measurement, and selecting a wavelength for measurement where phenol has a higher molar absorptivity coefficient.


What is the molar extinction coefficient of Phenol red at 610NM?

Molar extinction coefficient of phenol ret at 610nM is 22 mM-1 cm-1


What is phytoremediation of phenol and phenol derivatives by using hairy roots of Brassica juncea?

It is a proposed way of removing phenol from water using mustard greens.


How do you figure out molar heat of combustion of phenol at 25 degrees celsius?

The molar heat of combustion of phenol can be calculated by measuring the heat released when a known amount of phenol is completely burned in a calorimeter. The heat released is then used to calculate the molar heat of combustion using the mass of phenol burned and the molar quantity of phenol. This calculation can be done using the formula: heat released = molar heat of combustion x moles of phenol.


What household products contain phenol?

Some household products that contain phenol include disinfectants, antiseptics, and some cleaning products. These products may list phenol as an active ingredient on the label. It is important to follow usage instructions and safety precautions when using products containing phenol.


Can we measure the coefficient of viscosity of mercury by using stoke s law?

Yes, the coefficient of viscosity for Mercury can be calculated using Stoke's Law.


What effects would protein metabolism show using phenol red?

Yellow


How convert cumene to phenol?

Cumene can be converted to phenol through a two-step process. First, cumene is oxidized to cumene hydroperoxide using oxygen or air. Then, the cumene hydroperoxide undergoes acid-catalyzed cleavage to produce phenol and acetone.


How do we determine molar extinction coefficient using standard plots?

In the beginning, no you need not cull the special coefficient