What is Rf value& Rx value in TLC?

1 Answers   Abbott,

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Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?

0 Answers   Apex, BNM, Ranbaxy,

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why 2Theta value is consider in the XRPD spectra and how to consider the 2 Theta value

2 Answers  

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In HPLC what is Single point threshold, peak purity index and minimum peak purity index? what should be consider for pure peak.

3 Answers  

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what is the difference between c-8 and c-18 column

7 Answers  

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what is titrent,& titrate

2 Answers   Graviti Pharmaceuticals,

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Please give idea about method development for cleaning method and how maco level establish

0 Answers  

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Suppose we prepared pH buffer solution in lab.and calibrate against NIST solution, and same shall going to used upto 30 days. is it possible to stable pH and apperance ? suggest ?

1 Answers   Orchid,

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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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some compound havving uv region but not give much more response during hplc analysis

2 Answers  

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How much sample concentration should i inject against diluted standard in related substances for drug product in hplc analysis

1 Answers   Apotex,

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we calibrate HPLC once in 6 months while iam doing calibration i came to know that calibration was failed. then how can i justify that the samples analyzed on the system during this 6 months was wright? how can i forward in to the next step for those batches?

5 Answers  

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