Varian 450-GC, User Manual

Page: 37 / 205

Installation
Page: 18 User Manual 450-GC Varian, Inc.
Nuts and Ferrules for Packed Columns
•
Metal packed columns are usually installed with a
metal 2-piece ferrule. (A commonly used metal
packed column is 1/8" OD stainless steel. It uses a
1/8" ID stainless steel ferrule)
•
Glass packed columns are 1/4" OD and are
installed with a graphite front ferrule and a metal
back ferrule installed backwards.
Connect a Packed Column to the Injector
Follow the steps below to install a new packed column into your 1041 or 1061
Injector. Note that the Injector must first be converted for packed column use by
installing the appropriate adapters.
•
Place nuts and ferrules on both ends of column as shown.
•
If your column is metal, insert it into the Injector fitting and gently push until
it stops. Manipulate the column so the detector end points to the detector
OR
•
If your column is glass, insert it into the Injector, rotate it slightly so the
detector end is out of alignment with the detector and push gently until the
end is near but not touching the oven ceiling.
•
Hold the column in place and thread the nuts by hand.
•
Tighten the nut finger-tight and then give it a further 3/4-turn with a small
wrench.
A Two Piece Ferrule
B Column Nut
C Back Ferrule
D Front Ferrule
E Column Nut
F Metal Back Ferrule
Installed Backwards
G Graphite Ferrule