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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
1691How 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?
1830Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...
1753In 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?
2017Post New Analytical Chemistry Questions
iam usig ph buffers merk. manually how to prepare ?
Why we use potassium dichromate in uv calibration Exact reason behind it??
what is the extinction coefficient for Indomethacin or at 319nm wave length.
In the isomers,enantiomers give the only physical properties present such that no chemical properties present.
How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain
how to select short coloum and long coloumn for new molecule
in dissolution if one bowl got 70 percent 2nd bowl got 80 percent and 3rd bowl got 90 percent then how proceed?
what is definition of validation? which components are followed give detail?
Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?
please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development
for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol
what are risk assement in the analytical qbd?
In which situation we require to prepare the standard solution from sample in Related substance method?
In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.
in hplc chromatogram started from left to right and in uv spectrum started from left to right
