Answer Posted / kkpk

Based on the solubility of the drug.

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?

2015

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Colorimtry

1698

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

1185

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How we choose the mobile phase for method development.?

1268

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Why only 1.2 million lux hours require in photostability study?

1098

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what are risk assement in the analytical qbd?

804

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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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how to develop the icp ms method? Application of icp ms?

846

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give clarity of linearity and range in method validation

2471

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what is mean by covalidation

829

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why we are using benzene, anyline in acetic anhdride assay titration method?

2167

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Why dissolution test is not performed in all of the products

2577

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if rsd failed then what require to do?

877

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what is %labelled amount in content uniformity of dosage unit and its calculation?

5299

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Which are the diffrent grades of api in pharma?

813

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