In IR spectra, generally a molecule vibrates without apply emr or ir light?
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how do start hplc method development? how much sample required for developing the method development?
3 Answers BMS, Cipla, Indoco Remedies, Sun Pharma,
How to develop the method when we have very low amount of impurity?
what is mean by 21 CFR PART? In that what is 21 ?
what is diffrence between Specific optical rotation, optical rotation?
why we inject sample TWICE in ASSAY by HPLC analysis but in RS once?
4 Answers Aurobindo, DRL, Neuland,
what is difference between zero air gas and o2 gas
1 Answers IPCA, Vasudha Pharma,
what are the normalisation, internal standard and external standerd methods in HPLC.
why reference flow required during hplc analysis on rid?
How to establish relative response factor for hplc. Why it is required?
Why caffeine as a reference standard used for calibration of HPLC?
11 Answers Gangwal Chemicals, Orchid,
What is linearity in HPLC and how will you test?
some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?