Page 233 - Applied Pharmacognosy
P. 233

II- Mobile phase

-Examples
- Choice of carrier gas
*Inertness
*Dryness(free from water & impurities (molecular sieve)
*Safety
*Cost
*Availability
*Type of detector used (it affects detector performance)

Flow meter is used to adjust steady flow rate (affects column
performance & tR)

                                                                                                      232
   228   229   230   231   232   233   234   235   236   237   238