water is more polar than acetonitrile.but in reverse phase chromatography peaks elute earlier when we increse Acetonitrile.what is the reason.

10 Answers   Matrix,

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what is diffrence between Specific optical rotation, optical rotation?

3 Answers  

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WHICH PRESSURE IS HIGH EITHER INJECTOR OR DETECTOR IN GAS CHROMATOGRAPHY

4 Answers   Avon Organics, Dr Reddys, Reddy Labs,

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why we are taking 89ml concentrated HCL for preparing 1N HCL

3 Answers  

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Qc interview questions

0 Answers   Apotex,

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How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain

0 Answers   Graviti Pharmaceuticals, Vimta Labs,

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Chromatographic Purity is a Qualitative analysis

2 Answers   Shasun Chemicals,

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What is the reason of RT change in new column v/s old column in HPLC

3 Answers   Apex,

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Plz explain the formula in uv calibration =Absorbance of the sample ( x ) x 10 x 1000/Weight of potassium dichromate taken in mg

1 Answers  

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what is the meaning of PURITY AND POTENCY .what is the difference between PURITY and POTENCY

5 Answers   Orchid,

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What is the difference between Capillary column and Packed column.

7 Answers   Cipla, Hetero, Sun Pharma, Supreme Petrochem,

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What is the optimum period of storage of indicators?

1 Answers   Orchid Chemicals and Pharmaceuticals,

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