Answer Posted / uvreddy

based upon sample solubulity,elution

in DMF having extra impurities and in api COA also having extra imp than USP or BP product then how require to proceed?

823

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what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

2022

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What is viod volume and peak purity in HPLC?

2878

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USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

2006

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Please give idea about method development for cleaning method and how maco level establish

739

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give clarity of linearity and range in method validation

2413

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for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol

6059

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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 ?

2647

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analytical method validation require to with respect to release specification or shelf life specification?

785

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What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

7532

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Hi sir if any product monograph not given known impurities (may be 5 impurities) specifications then how we require to proceed for inhouse formulation?

695

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function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

2657

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Why we check moisture,ash & AIA in product

1871

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In rs method development when we are going area normalization method to dilute standard method?

1516

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Why a1% value is used for some product ? What is the criteria for selection a1% value ?

2337

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