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why KF factor is between 4.5 to 7.5 mg/ml ? why ? why
sometime pyridine is used in analysis like in raw material
solvent like acetone etc?
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Answer Posted / urmila pawar
bcoz acetone has carbonyl functional grp which reacts with
metanol and forms different compound
| Is This Answer Correct ? | 9 Yes | 13 No |
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what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me
How to know the estimated LOQ concentration in ppm
What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio
Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...
I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?
which situation gc hs and gc als require to use?
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Why use only methanol,used determinationof moisture content not use other solvents
what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?
if peak get problamatic then what require to do?
Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?
1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.
in stress study if your api not soluble in hcl naoh h2o2 then what require to do?
in which situation require to take incident in validation?
what is classification of elemental impurities? what is risk assement in elemental impurities?
