Answer / bavaliyamahesh

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IF THE COMPOUND PKA IS 5.3 WHY WE ARE ADJUSTING PH+/-2 OF THE COMPOUNDS PKA. WHAT IS THE CONDITION

2 Answers   Dr Reddys, Reddy Labs,

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In standard weight box used for calibration of analytical balance there are two numbers (Qty) of 20mg, 200mg,2.oGM weights. Why?

2 Answers   Orchid,

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what is the general mechanism of high performance liqiud chromatography?

7 Answers   Ajanta Pharma, Amneal Pharmaceuticals,

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How can the GC or HPLC method is selected to determine the impurity profile in drug product?

1 Answers   Ajanta,

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My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

0 Answers  

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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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what is the extinction coefficient for Indomethacin or at 319nm wave length.

0 Answers   GSK GlaxoSmithKline,

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Why we use caffeine for HPLC calibration in Detector wave ength accuracy test

60 Answers   Arvind, Aurobindo, Cipla, Reddy Labs, Shasun Chemicals,

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Why KBr pellet is used in IR?

11 Answers   Glochem,

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what is the principle involved in turbidometry and nephelometry ?

0 Answers   Graviti Pharmaceuticals,

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what is hold time in Gc?

1 Answers  

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what is the difference between gc& hplc. why we r not calculating purity by gc for final products

5 Answers   Biocon, Cipla,

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