Answer Posted / ch s raju

in normal phase we are using non polar solvent as a mobile
phase and if we are using non-polar stationary phase it
dissolves in non-polar solvent column collapes

how to set sample and standard concentration in RS method?

838

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What is the accrptance criteria in RSD for RS method precision on basis of impurity percentages?

765

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What is similarity factor?

1145

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How do we fix the sample concentaryion in hplc method development?

1081

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Why a1% value is used for some product ? What is the criteria for selection a1% value ?

2288

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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 ?

3618

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what is the extinction coefficient for Indomethacin or at 319nm wave length.

3990

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Tell me something about Vitamin A test method by HPLC

2626

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

2957

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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

1854

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what is turbidimetric titration?Give 2 examples.

2578

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

2523

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How to set analytical specification for combination products?

771

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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

1574

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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?

2012

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