Answer Posted / sheetal rajput

According to the IP.

What is related substance by HPLC impurity limits as per USP?

1153

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what is procedure of actual procedure for registration of drug?

2055

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AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?

2113

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4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

2768

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How would you decide dissolution medium for NCE compound of class I drug

2311

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Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

1750

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mode of absorption in alimentary canal?

2433

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how can give the expiry period and restadardisation of volumetric solution

2641

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how the compound separate in coulunm,explain

2592

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What is the purpose of octyl silane columns?

4335

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if content uniformity passing but dissolution varrying then what is next step?

936

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How to fix the sample conc. in Related substances test by HPLC?

1142

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in which situation require to use paddle and basket?

791

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Why perchloric acid used for potentiometric titration

2735

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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

1651

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