Answer / vasavi

ion Exchange chromatography

what is role of pH in mobile phase

3 Answers   Cipla, Dhanuka Laboratories,

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What is the use of tailing factor ?

2 Answers  

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Is there any difference in principal of reverse phase and normal phase chromatography? and why? Please update. Thank and regard

3 Answers   MSN Pharma,

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Why we are use 0.005M Sulphuric acid, in control of absorbance performance test UV Spectrophotometer calibration

2 Answers   Cipla, Reddy Labs,

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process of Diclofenac sodium,IP.

0 Answers  

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How we will diapose UV (detector) lamp?

1 Answers   Bayer,

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what is the principle involved in determination of moisture content?

3 Answers  

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what is the difference between isocratic & elution technique?

3 Answers   Laurus,

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why chiral compounds will rotate the plane polarized light in SoR.

4 Answers   GVK,

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How we develop a method by HPLC for unknown compound,if we got three peaks with same response then how we can find out which one is our desired compound's peak without taking help of LC MS.

4 Answers   Apotex, Kemwell,

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2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.

0 Answers  

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why we have to store the pH electrode in 4.01 buffer ?

1 Answers   Aurobindo, BioMax, BioSynth, Cipla, Indoco Remedies, SGS,

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