Answer Posted / chandu

rrf= slope of impurity / analyte slope

rrf is to determine the area loss due to detector nm

can i use hplc detector to uplc and why?

2295

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which are the diffrent batches in the pharmaceuticals?

821

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WHAT IS THE PARAMETER FOR THE SELECTION OF MOBILE PHASE IN HPLC?

1196

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My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

1603

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We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?

1722

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How will u perform degradation study in detectors other thann PDA in HPLC Methodology

2549

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in dissolution if one bowl got 70 percent 2nd bowl got 80 percent and 3rd bowl got 90 percent then how proceed?

759

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WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE

2138

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What is the use of tlc and hplc? And when and where use?

1168

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If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately

864

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why require to do water content for drug product?

838

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What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio

1902

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What is aggregate and fragments in SEC?

2117

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What is Band broading effect explain

1887

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Why we check moisture,ash & AIA in product

1889

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