Answer Posted / vijaykumar

The Iodine present in the kari-fischer reagent wil react
with the water present in the sample> and will be
eliminated as HI.

H20+I2-----HI

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

1869

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As per ICH related substances stability trend limit from initial to shelf life

3247

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How to do regeneration of Metacarb Pb plus column?

2579

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which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc

2160

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Related substance method equivalency on control sample or spiked sample?

764

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what are the standard methods for HPLC?

2786

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if instrument calibration fails then what require to do?

978

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In HPLC (Waters) software Empower1,2 &3 what is the updation for each version

3029

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which batch require to use for analytical method validation?

802

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What is related substance by HPLC impurity limits as per USP?

1105

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how require to select dissolution media? what is discrimination?

789

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I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?

3539

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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?

922

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how to calibrate hplc & gc

4508

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

2669

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