Answer Posted / sandip bhasme

GC has it's own limitations. You cannot analyse non volatile
/ very high boiling point materials on GC. Commonly, If you
are using FID GC, You won't get polymer / inorganic
impurities on your chromatogram.

when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

1984

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For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?

1836

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Is it nessesary all multimedia dissolution require descriminatory?

739

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What is the difference between chromatographic purity and related substances?

1295

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What should be the level/ Percentage of Arsenic in Arsenic free zinc.

2178

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why we use Dichlorobenzene.nitrobezine.t-butyldi sulhate.for calibration of gc Head space

2203

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how require to interprit the method precision data of hptlc?

761

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How can the GC or HPLC method is selected to determine the impurity profile in drug product?

7482

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How require to develop GC method? how to select diluent, GAS, column selection and other chromatographic conditions?

683

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For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

2262

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Why perchloric acid used for potentiometric titration

2630

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In Assy by potentio metry titration method how select MET U ,DET U, SET U,

2070

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What are modes of quantification in related substances

2111

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cefoperozone and sulbactam inj. hplc test method

2641

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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...

1632

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