why we are using in ph calibrations ph4,7,9.2 buffers only?

5 Answers   Reddy Labs,

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

0 Answers  

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WHAT IS DIFFERENCE BETWEEN RRT AND RRF IN HPLC

2 Answers   Cadila,

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I got 88.0 % assay for a drug in HPLC analysis for same injection i got 40.0% related substances is it possible? what is the relation between results of assay and purity?

5 Answers  

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importance of internal standard and in what conditions it is used?

1 Answers  

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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?

0 Answers  

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Why we have to take 42gm of sodium hydroxide instead of 40gm for preparation of 1M Sodium hydroxide as per Pharmacopia? Whether it means the formula for calculating molarity was wrong? 

5 Answers   Claris Otsuka, Ranbaxy,

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how much mass should be there in volumetric flask while in preparation of sample for assay? 

0 Answers   Reddy Labs,

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why use benzophenone & caffene acetone in hplc calibration

1 Answers  

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How can we separate Urea & semicarbazide in single HPLC method ?

2 Answers  

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In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )

0 Answers   Alembic,

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if relative response factor is 1.07, to select how much value

1 Answers   Natco,

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