what are the normalisation, internal standard and external standerd methods in HPLC.

2 Answers   GVK,

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what is the difference between lod and loq?

4 Answers   Apotex, Aurobindo,

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what is the limit for KF Factor ,we take factor using water we will found factor between 6 to 7 ,while on KF Reagent bottle mentioned 5 mg/ml water content.if we not use dried methanol it is effect on factor.

1 Answers   Atul,

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A new drug substance found fail to meet specification for an unknown Impurity during stability study(Specific change),how would further proceed?

2 Answers  

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

0 Answers  

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What is the use of tlc and hplc? And when and where use?

0 Answers  

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what is the difference between potentiometric assay and hplc assay

2 Answers   Parabolic,

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

0 Answers  

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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 ?

0 Answers   Wockhardt,

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What are the class-1 residual solvents listed in ICH guidelines?

2 Answers  

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

0 Answers  

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In acid base titration, after complet consumption of HCl by NaOH, addition of next drop of NaOH will give pink colour with phenolpthalein indicator. Why this pink colour appear? Why not blue, black, green or anything elese?

3 Answers  

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