Answer Posted / d.lodhiya

1.IR spectrum is standars and peak is stable.
2. Because its having 2 peak and 2 vallay . stable and
standard upto 3 hrs. its obays bees law.(ABS .25 to 1A)
3. Its covers boths range UV and VIS.

what is classification of elemental impurities? what is risk assement in elemental impurities?

709

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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?

2264

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why xterra column require to use at higher ph?

873

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2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.

2173

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Which are the diffrent grades of api in pharma?

698

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

7487

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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

1577

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From where require to take the RLD sample?

709

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how you confirm the assay method?

726

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Why we select scan range from higer wavelength to lower wavelength in uv visible spectroscopy and ftir spectroscopy ? .

856

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What is similarity factor and its use in api strength?

1250

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Colorimtry

1620

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what is mean by nitrosamine impurities?

1019

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Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

1858

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In Dissolution Test why limit is define Q+5% what is the role of +5%.

3045

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