Page 136 - Applied Pharmacognosy
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Mobile Phase Selection

How to adjust the Mobile phase Strength?

❑ Mobile Phase Strength is        100/0
   adjusted by changing:           98/2
     ➢ Type of Modifier (MeOH,
        ACN).
     ➢ Solvent Strength (%
        modifier), has a greater
        influence on separation.

Eluent: Hexane/methanol

 As polarity of eluent                    95/5
Overall retention time

Normal Phase Separation                   135
   131   132   133   134   135   136   137   138   139   140   141