What is the difference between known and unknown impurities?

1 Answers  

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why you require QA approval & what is its importance?

2 Answers  

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Why linearity of detector performed in HPLC calibration

2 Answers   Cipla, Intas,

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Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?

0 Answers   Aurobindo, Reddy Labs,

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i set electrode to 7 buffer than i used it to check 4 buffer and 10 buffer if the results are not as expected than is it better to set the buffer again to 4 buffer or is there any other method available please let me know ...

2 Answers   Glochem,

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Dear sir, This is R.Kadambavadani working in a pharma industry. while doing RS analysis of ibuprofen API, unknown peak eluting some times in the 0.6 Min RT. Kindly send me what is the exact reason behind that. also am using ACN the mobile phase.

1 Answers  

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sop of a uv visible spectrophotometer double beam elico model

0 Answers   Sun Pharma,

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Tell me something about Vitamin A test method by HPLC

0 Answers   Lupin,

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why disodium tartarate is used for autotitrator calibration

2 Answers   Cipla, Micro Labs,

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If we are getting split peak in Chromatogram,what we can do?

7 Answers  

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in stress study if your api not soluble in hcl naoh h2o2 then what require to do?

0 Answers  

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what is the d/f b/w normality and molarity and molality..?

1 Answers  

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