Answer Posted / latif ahmed

1.caffeine is available in anhydrous form.
2.Shows maxima at two wavelengths ie.205nm & 273nm
3.Cheap & easily avalable.

mode of absorption in alimentary canal?

1919

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

2933

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

1656

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how to get accurate result for Residue on evaporation in purified water

1115

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if you have given one product then how you determine the impurity in that?

284

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how you establish the LOQ?

301

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WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?

2137

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What is rs test why we are performing rs test?

1299

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why require to do water content for drug product?

311

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in sampling of raw material which side is pasted sampled labels

1247

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what is mean by peak intigrity?

335

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How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.

3587

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AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?

1604

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What is the formula for relative diffrence for standard solution in solution stability in validation?

301

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function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

2058

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