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If inhouse hplc related substance method is completly diffrent from Usp for finished proďuct with diffrent impurities then how require to prove method equivalecy?
Why are olefins (alkenes) good monomers for polymerization reactions? : Polymer Chemistry
I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?
What is third generation HPLC Columns?
Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?
Explain Thiele's structure for benzene. What is the difference between thiele's structure and modern structure (resonance hybrid) of benzene?
Define electrochemical series? : Electrochemistry Corrosion
Why we use DPPH in ESR and DPH in fluorescence spectroscopy?
What is the calibration of uv process and preparation
Why sodium hydroxide used for maintain pH of phosphate buffer
What is the function of diethyl amine?
in which situation ion pair require to use?
The reaction of an acid with an alcohol to form an ester and water. What is the process?
Qc interview questions
using gradient pressure in gas chromatography are not ?using gradient pressure why