Answer Posted / kizar ahamed

Column dimension (diameter) is different . In preparative
column we can give high flow rate (depends upon the
diameter)

Preparative column :9.4mm*250 5micron

Analytical column :4.6*250mm, 5micron

if you have given a blank water how you analyse by general analytical techniques?

1519

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pharma industries oriented

1699

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give clarity of linearity and range in method validation

1875

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what is mean by extactable and leachable study?

578

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USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

1566

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what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

2218

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1828

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What is column in chromatography?

1773

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how to select short coloum and long coloumn for new molecule

1826

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for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol

5322

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what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

9451

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in api coa contains only process impurities and in product coa contains degradation impurities?

330

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what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?

3999

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

1852

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What are modes of quantification in related substances

1732

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