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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
1582How 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...
1637In 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?
1920Post New Analytical Chemistry Questions
What is importance of pH in the Heavy metal test and How it effect on the test results?
if you get peak in blank then what require to do?
what are the standard methods for HPLC?
In HPLC (Waters) software Empower1,2 &3 what is the updation for each version
How to fix the sample conc. in Related substances test by HPLC?
in api coa contains only process impurities and in product coa contains degradation impurities?
How to know the estimated LOQ concentration in ppm
what is %labelled amount in content uniformity of dosage unit and its calculation?
how you start the solubility study?
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.
why multimedia dissolution require to do?
what you do when compound having dwel wavelength?
Which are the diffrent grades of api in pharma?
In rs method development when we are going area normalization method to dilute standard method?
