Post New Analytical Chemistry Questions
Why we check moisture,ash & AIA in product
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?
In 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?
about method developement in hplc
i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me
we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion
WHY pKa value is more important than pH value of the mobile phase in HPLC?
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.
what is the extinction coefficient for Indomethacin or at 319nm wave length.
What is diffrence between extractable volume and deliverable volume? Answer pls
what are the standard methods for HPLC?
what is definition of validation? which components are followed give detail?
How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample
Many times I don't got a caffeine peak in calibration of hplc using guard column ❓
how the compound separate in coulunm,explain
