Answer Posted / rohit patel (torrent pharma)

UV Region is 190 - 380nm
Visible Region is 400 - 800 nm

in monograph 7 imp are there but in vendor showing 5 imp do not req to include 2 imp for that what will be justification?

737

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how to set sample and standard concentration in RS method?

917

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What is similarity factor and its use in api strength?

1308

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In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.

3132

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which are the sizes of capsules?

988

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

2353

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in dissolution why pool sample needed? in which type of drug pool sample need?

3186

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

3398

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What is the difference between purge septum flow and column flow in gas chromatography?

2593

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acceptance criteria for lod & loq by standard deviation of response and slope??

2599

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how require to set assay concentration for standard and sample?

933

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How to calculate coreletion coefficient

1723

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why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

2314

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In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?

1982

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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...

1700

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