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How you start the method development of unknown compound.
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which situation gc hs and gc als require to use?
In GC Why does retention time decrease when temperature increases? Also how does a change in temperature effect selectivity?
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?
11 Answers Aurobindo, GVK, Sohan Healthcare,
What are the primary standards?
In HPLC Chromatographic separation Resolution equation is Rs = 1.18 (tR2 –tR1)/wh1+Wh2, Where, tR2 and tR1 is run time of eluent ratios of the distances from the point of application to the centers of the spots and the distance travelled by the solvent front from the point of application (retardation factor), and Wh1and Wh2 , is peak width of at half height. What is 1.18 ?
Why pyrene is also use for calibration if detector
How to choose Normal phase or Reverse Phase HPLC method Conditions for given sample?
what is stability study ? why it is needed and how itis done
Why sometime potassium ortho phosphate mix with acetone use for sample preparation for hplc
Describe 5 components of SFC ?
1 Answers College School Exams Tests,
what is the effect of injection volume calculate flow rate in perkin elmer headspace? (ccm parameter in HS)
how to get accurate result for Residue on evaporation in purified water
Organic Chemistry 
