Answer / guest

for good resolution,for d elution of impurities

Answer / ansari mohd tauseef

pH is straight away related to retention time.more acidic
the ph lesser the time consumed for elution.and moreover
better peak bands with sharper resolution and area are
observed if ph is adjusted accordin to specifications
required

void volume is depending on column or not? if yes how will you depend?

1 Answers   Granules,

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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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what is mean by content uniformity?

5 Answers  

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In gas chromatographic analysis sometimes we use headspace, why it is required instead of manually injection?

1 Answers  

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what is titrent,& titrate

2 Answers   Graviti Pharmaceuticals,

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How do you increase the number of theoretical plates?

1 Answers   Cipla,

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India is. Under which zone as per QF1.?

4 Answers   Acebright, Aurobindo, Gland Pharma,

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What is third generation HPLC Columns?

0 Answers   Emcure,

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why hydrogen and zero air used for flame ignition in gc?

1 Answers  

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how to calculate elemental impurities?

0 Answers  

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key components in hplc?

3 Answers   Laurus,

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which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc

0 Answers   Hetero,

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