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please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development
1579How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?
1724Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...
1636In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?
1917Post New Analytical Chemistry Questions
How you develop a method in HPLC?
how you confirm the assay method?
what is classification of elemental impurities? what is risk assement in elemental impurities?
why require the ph, buffer during hplc mobile phase?
in which situation require to use paddle and basket?
How would you decide dissolution medium for NCE compound of class I drug
How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?
What is the difference between purge septum flow and column flow in gas chromatography?
Ph meter can show more than 14 ph reading? Why ph range in between 1 to 14 only?
i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me
Why six unit used for precision?
HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.
how require to fix the linearity and accuracy cincentration range?
What is the principle of Thermal conductivity detector and FID?
For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?
