Answer Posted / komal jain

A compound of known purity from which a standard solution can be prepared by weighing a known quantity and dissolving it in definite volume of solvent.
Example : KHP , K2CO3

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

1154

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

4125

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sop of a uv visible spectrophotometer double beam elico model

5989

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For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

2356

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for inorganic molecules require to do RS, Assay and disso?

775

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how pda detector works over uv?

780

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in sampling of raw material which side is pasted sampled labels

1886

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why we should take dst factor for below 1%moisture samples

2716

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what is partion and column chromatography

2468

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What is delay volume?

1433

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We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?

1784

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How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain

2438

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what is procedure of actual procedure for registration of drug?

2055

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What is similarity factor and its use in api strength?

1364

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What is the difference between spectro meter and spectro photo meter?

11618

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