Answer Posted / umesh patel

microvolt.second

For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?

1895

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In rs method development when we are going area normalization method to dilute standard method?

1508

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Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

2813

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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

6047

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

2328

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in hplc chromatogram started from left to right and in uv spectrum started from left to right

934

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what is the origin to prepare standard operating procedure

2297

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How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample

3213

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inhouse product is in capsule form in combination and RLD is in tablet form then can we proceed for multimedia CDP? in inhouse capsule product disso is paddle with sinker in release media is there then RLD product in tablet form then with same as paddle with sinker we can proceed n.a.?

698

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what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?

3648

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

1120

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Colorimtry

1641

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in which situation require to use paddle and basket?

723

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

5198

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how require to set assay concentration for standard and sample?

909

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