Answer Posted / k l srinivas

due to major variations are coming

what is the principle of UV Vis spectroscopy, AAS, ICP OES,ICPAES, ICP-MS and FTIR

8465

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how to select short coloum and long coloumn for new molecule

1824

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What is shaking level in GC?

336

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what is mean by 40 in the dissolution basket mesh size?

300

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How we can identify process related and degradation impurity in single method with short period?

340

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what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?

3194

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How do we fix the sample concentaryion in hplc method development. What is the basis?

684

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what is procedure of actual procedure for registration of drug?

1463

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we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion

1362

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1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer

1308

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Why sometime potassium ortho phosphate mix with acetone use for sample preparation for hplc

992

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on the basis of bcs class how to proceed the solubility?

285

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How to do regeneration of Metacarb Pb plus column?

2083

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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.

1774

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using gradient pressure in gas chromatography are not ?using gradient pressure why

2944

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