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Coliform bacteria is associated with fecal matter, and since rain does not come in contact with fecal matter before hitting the ground, it should not contain coliform bacteria.
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Does a positive presumptive test mean that water is absolutely unsafe to drink?
No it doesn't, it just tells you that there are coliforms present, but not what kind. Coliforms themselves do not make you sick, the type of bacteria does.
Does rainwater contain uric acid?
No
Does the chloroplast contain bacteria?
Bacteria have prokariyotic cells.They do not have chloroplasts.
Why are coliforms used as indicator organisms if they are not usually pathogens?
Coliforms are used as a indicator organism because they are abundant in matrix, easy to find, cost effective. Coliforms has frequently been used in water testing because of all of these benefits.
Is rainwater the purest water known?
No, it is not true; rain water contain all the impurities washed from the atmosphere.
What is another word for poo bacteria?
coliforms
What are the names for bathroom bacteria?
Coliforms E. coli is one example
What is a presumptive test?
Presumptive test to confirmation of coliforms bacteria in the samples
What is presumptive test?
Presumptive test to confirmation of coliforms bacteria in the samples
Does a positive presumptive test mean that water is absolutely unsafe to drink?
No it doesn't, it just tells you that there are coliforms present, but not what kind. Coliforms themselves do not make you sick, the type of bacteria does.
Does rainwater contain uric acid?
No
Why do the membrane filtration and the colilert IDEXX technique for measuring fecal coliforms in waste water produce discrepant results?
The membrane filter / agar plates produce colonies from bacteria that can grow on the agar you are using (not all fecal coliforms can). The Colilert will turn color if the bacteria have the enzyme to metabolize substrates in the Colilert (not all do). If all fecal coliform bacteria could grow on the agar and all fecal Coliforms had the right enzymes you'd get the same numbers.
Why rainwater is not acidic?
because it does not contain acid
What microorganisms besides coliforms are liable to give positive presumptive test?
Microorganisms like coliforms are liable to give a positive presumptive test. Other types of organisms include gram negative bacteria like E. coli.
What does sea water contain that is not found in rainwater?
salt
Microorganism used in milk?
There are many microorganisms used in milk. Some of these include lactic acid bacteria, such as Lactobacillus bulgaricus, and coliforms.
Does naturally acidic rainwater contain carbonic acid?
Yes it can
