If inhouse hplc related substance method is completly diffrent from Usp for finished proďuct with diffrent impurities then how require to prove method equivalecy?

773

Why are olefins (alkenes) good monomers for polymerization reactions? : Polymer Chemistry

1399

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?

3540

What is third generation HPLC Columns?

1981

Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?

2964

Explain Thiele's structure for benzene. What is the difference between thiele's structure and modern structure (resonance hybrid) of benzene?

5226

Define electrochemical series? : Electrochemistry Corrosion

1013

Why we use DPPH in ESR and DPH in fluorescence spectroscopy?

2586

What is the calibration of uv process and preparation

1998

Why sodium hydroxide used for maintain pH of phosphate buffer

2414

What is the function of diethyl amine?

1105

in which situation ion pair require to use?

821

The reaction of an acid with an alcohol to form an ester and water. What is the process?

1027

Qc interview questions

1743

using gradient pressure in gas chromatography are not ?using gradient pressure why

3390