Page 234 - Applied Pharmacognosy

III-Columns

prior to use , column should be conditioned by maintaining
it for several hours with stream of carrier gas passing
through it at a temperature higher than temp. at which
the column is used but not above the maximum column
operating temp.

*All columns are coiled
* On every column there is a metal tag attached that lists:
- stationary phase (packing material)
- max. column operating temp.
- Column length and diameter

233