Chapter:
Topic:
INSTALLATION
Analytical Column Installation
ADalytioai
cchnan
Detector
inlet
Location
of
PJlisbing
[I]
filleT
(at
rear
of column
oven)
0
•
•
Column
•
•
.
oven
I@>
Oven
healing
element
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TOPVIEWOF 8610CGCWITIl
COLUMN INSTALLED
The column oven in the SRI 86lOC GC measures approximately 7.8" x 8.0" x 3.0" (19.8 x
20.3 x 7.2cm). A columnwound into a coiled form with a maximumdiameter of
7"
and a heightof
3" may
be
installed in the interior space available. Standard 6" diameter or 3" diameter SRI-wound
columns are installedwith ease. Either capillary
type
(0.25 to 0.53mm J.D.) or packed columns (1/8"
to 1/4") may
be
used, dependent on the application. Capillary columns may
be
made of either fused
silica or stainless steel, and are coated onthe inside
with
a fine
film
of stationary
phase
between 0.1
and 5.0 microns thick. This
phase,
specific
to
the application,
permits
the sample
components
to
be
properly separated for analysis. The packing material in a packed column serves the samepurpose.
For
wide-bore
capillary applications, metal capillary columns are recommended, as they are
virtually
indestructible and canwithstand much physical abuse,
unlike
the
fused
silica variety, which can
be
broken with ease
if
handled improperly. SRI recommends the use ofmetal capillary columnswhen
available for the application.
0.25
to
O.32mmI.d
fused
silica
robing
coated
00
inside
surface
with
stationary phase
film
0.1
to
1.0
microns
thick
O.S3mm.
I.D.
fused
silica or
fused
silica-lined stainless
steel
rubing
coated
on
the
inside
surface
with
a stationary
phase
film
0.1 to 5.0
micron thick
1IS- to
114-
0 .0 .
stainless
steel
Of
glass tubing
packed
with
granular
support
particles. These
support
particles may have a
stationary phase
coating. Glass tubing
is
specified
forpesticide
analysis, as some pesticide components react
withstainless
steel.
Ametal
frit
orglasswoll
plug retains the packing insidethe tubing
