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Evaluate the effectiveness of a disinfectant with a phenol coefficient of 40?
Wiki User
∙ 12y ago
A disinfectant with a phenol coefficient of 40 indicates that the chemical agent under study is 40 times as effective as phenol.
Wiki User
∙ 12y ago
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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
What are some limitations of a phenol coefficient test?
Your results might be different then these but I hope this will give you an idea for an answera. In our lab we observed growth in all of the test tubes. Originally we had hypothesized that the tubes with higher concentrations of disinfectant would inhibit the growth of the inoculated organism. This experiment allows us to conclude that the disinfectant is not very efficient. Although we were able to come to a conclusion, our results are limited to the organisms that we used to inoculate the test tubes. Different organisms might be more resistant to the disinfectant. A conclusion that the disinfectant we used is inefficient with all bacteria cannot be made.
Disinfectant have one basic concept phenol which is partially miscible with water but never appeares two layered what is the one physical concept behind this?
Phenol or carbolic acid is an acid so becomes ionized in water partially and becomes soluble now this mixture dissolves some unionized molecules of phenol so mixture is homogeneous and not forms two layers.
Is phenol volatile?
Phenol is flammable.
What are some examples of a phenol?
What are some examples of Phenol
The lower the phenol coefficient is the stronger the disinfectant is?
No,, the higher the phenol coefficient the stronger the disinfectant
What is the use of chick-Martin test?
Chick martin test is used to estimate the efficacy of a disinfectant. In this test a standard culture of Salmonella typhi, is tested for a fixed period (30 minutes) against various concentrations of phenol solution and various concentrations of the testing disinfectant; the result is expressed as the phenol coefficient, the highest dilution of the given disinfectante that kills bacteria, divided by the highest dilution of phenol that sterilizes the solution, within the measured time.
What is the use of chick martin test?
Chick martin test is used to estimate the efficacy of a disinfectant. In this test a standard culture of Salmonella typhi, is tested for a fixed period (30 minutes) against various concentrations of phenol solution and various concentrations of the testing disinfectant; the result is expressed as the phenol coefficient, the highest dilution of the given disinfectante that kills bacteria, divided by the highest dilution of phenol that sterilizes the solution, within the measured time.
Who first invented disinfectant?
Sir Joseph Lister/phenol.
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 carbolic acid for?
Carbolic acid is "phenol" based and was used as a disinfectant in hospitals.
What was Victorian carbolic acid spray used for?
Carbolic acid is "phenol" based and was used as a disinfectant in hospitals.
But not after 5min using phenol coefficient why?
because one bacterium takes 20 minuets to replicate.
What are some limitations of a phenol coefficient test?
Your results might be different then these but I hope this will give you an idea for an answera. In our lab we observed growth in all of the test tubes. Originally we had hypothesized that the tubes with higher concentrations of disinfectant would inhibit the growth of the inoculated organism. This experiment allows us to conclude that the disinfectant is not very efficient. Although we were able to come to a conclusion, our results are limited to the organisms that we used to inoculate the test tubes. Different organisms might be more resistant to the disinfectant. A conclusion that the disinfectant we used is inefficient with all bacteria cannot be made.
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.
Disinfectant have one basic concept phenol which is partially miscible with water but never appeares two layered what is the one physical concept behind this?
Phenol or carbolic acid is an acid so becomes ionized in water partially and becomes soluble now this mixture dissolves some unionized molecules of phenol so mixture is homogeneous and not forms two layers.
What is the use of liquid phenol in calamine lotion?
Phenol is also known as carbolic acid, and is used as a disinfecting agent and topical anesthetic. It may be used to cauterize small wounds and is used in conjunction with calamine (zinc oxide and ferric oxide) as an antipruritic, or anti-itch agent. The phenol most likely is present for its anesthetic effects to calm the itching sensation.
