Answer Posted / sigilipalliramu@gmail.com

In R.S by HPLC We inject 6preprations,as for ICH guide lines
in validations we prepare system precisson,intermediate precisson, method pression as6preparations.we based to this ich guideline supported data we inject 6preparations.

Those technical supotred data (6inj) show repatabulity results.

IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

2392

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Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

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about method developement in hplc

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Difference between hlaf and rlaf

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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?

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in which situation require to change rs specification?

702

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if you have given one product then how you determine the impurity in that?

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If vendor having more imp than monograph then how to proceed? and how to set spec?

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Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

2775

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If we have 5 strength which is not dose proportinate and excipients also diffrent in each strength then how we can proceed for Force degradation? and excipient are same but not dose propotinate the how FD?

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in api coa contains only process impurities and in product coa contains degradation impurities?

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Why only 1.2 million lux hours require in photostability study?

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