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From where 16 or 5.545 is derived in theoretical plates calculation formula by USP or JP/BP/DAB and what is meaning of this coefficient and impact in calculation ?
2 12866can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?
2182Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?
2184What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?
8863What is the difference between Spectroscopy and spectrophotometry,What are the applications?
4 11888Post New Analytical Chemistry Questions
Difference between the quantitative analysis and qualitative analysis?
effect of pore size, pore volume, partical size, column length, carbon load on retention time? what is carbon load? what is the use?
How will u perform degradation study in detectors other thann PDA in HPLC Methodology
[3/28, 20:52] Manoj P Venkatpurwar: how many impurities require to inject in assay specificity that how we can find out? and in Rs also how?
How to decide assay range for non pharmacopeial API analysis by HPLC? Could you give me any reference for same e.g Guidelines or Paper publications?
We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy
in dissolution why pool sample needed? in which type of drug pool sample need?
In Assy by potentio metry titration method how select MET U ,DET U, SET U,
How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.
iam usig ph buffers merk. manually how to prepare ?
why does used dry caffien in HPLC calibration?
In Dissolution Test why limit is define Q+5% what is the role of +5%.
How do we fix the sample concentaryion in hplc method development. What is the basis?
How require to develop GC method? how to select diluent, GAS, column selection and other chromatographic conditions?
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
