Answer Posted / vasu thanneeru

Method validation is only development of molecule calculation
but process validation is preparation of molecules

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...

2068

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is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

2216

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effect of pore size, pore volume, partical size, column length, carbon load on retention time? what is carbon load? what is the use?

1002

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[3/30, 13:29] Manoj P Venkatpurwar: How hplc column selection according to structure? How mobile phase buffer selection on molecule structure?

849

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What if impurity area in control sample coming more as compared to LOQ level of impurity ?

1650

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Which is the highly polar and highly non polar column in HPLC?

2344

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why holium oxide prepared in 10% HCLO4 SOLUTION

1493

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sop of a uv visible spectrophotometer double beam elico model

5988

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please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development

1687

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what is mean by dissolution biowaiver study?

993

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what is mean by dissolution hydrodynamics?

883

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What is intact assay method development.....?

2755

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if rsd failed then what require to do?

877

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Many times I don't got a caffeine peak in calibration of hplc using guard column ❓

1874

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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

1650

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