Answer Posted / ala

potency meaning the bio activity for the API
assay is the quantitative for the api

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

2210

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Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

1750

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why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

9883

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We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy

1960

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How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?

1827

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what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

2008

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If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately

901

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if instrument calibration fails then what require to do?

1017

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what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

2723

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

806

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

1153

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for which product require to do content uniformity? what is limit of cu?

867

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what is mean by dissolution hydrodynamics?

882

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if peak get problamatic then what require to do?

858

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how pda detector works over uv?

777

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