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Presumptive test to confirmation of coliforms bacteria in the samples
Prudence Stiedemann
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What property of blood is used in most presumptive test?
Hemogloeim
What are the limitations of phenolphthalein test?
phenolphthalein reaction is indicative of blood, it is only a presumptive test and false positives are possible. Additionally, the reaction is not species specific. Positive reactions are not limited to human blood.
Benzidine test principles?
BENZTDINE TEST Ø Presumptive test for identifying Blood Ø It is highly sensitive Principle involved:-It makes use of the peroxidase-like action of haeme group of Hemoglobin Method:-In presence of an oxidant like Hydrogen Peroxide, haeme group oxidizes colorless Benzidine to produce BLUE colored products
How much THC is considered a high level in urine testing?
50 nanograms of THC metabolites per milliliter defines a "presumptive positive" by NIDA (National Institute on Drug Abuse) certified labs. So, to pass the test, you don't need to have absolutely clean urine - you need to have less than 50 ng/ml of THC in your urine. Found this information here: http://best4drugtest.com/_passthctest.html
Which is more sensitive test fehlings test or Benedicts test?
benedicts test
What is a presumptive test?
Presumptive test to confirmation of coliforms bacteria in the samples
Is a breathalyzer a presumptive test?
Yes, in most states the breathalyzer is seen as a presumptive test.
What property of blood is used in most presumptive test?
Hemogloeim
What does a positive presence-absence test indicate?
The Presence-Absence (P-A) test is a presumptive detection for coliforms.
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 microorganisms other than coliforms that are reliable to give positive presumptive test?
klebsiella
Can a female get pregnant if she has amenorrhea?
Amenorrhea is one of the presumptive sign of pregnancy. Test yourself with over the counter pregnancy test. Amenorrhea is also due to a hormonal imbalance or you had a hysterectomy.
What is the adjective for presumption?
presumptive
What are the limitations of phenolphthalein test?
phenolphthalein reaction is indicative of blood, it is only a presumptive test and false positives are possible. Additionally, the reaction is not species specific. Positive reactions are not limited to human blood.
How is Prince William heir presumptive?
Prince William is heir apparent, not heir presumptive, no birth can displace him in the line of succession.
Can the NIK test U show positive for MDMA if the substance is sugar?
According to the manufacturer,Nik Presumptive Test Kits A and U in combination can show positive results for MDMA. Contact number is 800-728-0974.
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.
