Agilent Technologies 6850 Series II User Information page 167

Hardware
Because you are injecting sample directly into the column, most of the
hardware required is determined by your column inside diameter. Injection
technique, manual or automatic, must also be considered.
checklist for choosing hardware and shows where to find instructions for
installing the hardware and injecting the sample.
Note that if you are performing automatic injections on a 250 µm/320 µm
column using an autosampler, you must adapt it for on-column use. See
"Adapting for cool on-column injection" on page 228
Table 32. Hardware and Procedures Checklist
Automatic injection
Hardware
See Table 33 for part numbers
❒ Septum nut
❒ Insert
❒ Stainless steel needle
Where to find instructions
❒
"Installing an insert" on
page 173
❒
"Changing the septum nut or
cooling tower and septum" on
page 173
❒
"Check the needle-to-column
size" on page 170
Released: March 2004
Manual injection with septum nut
See Table 33 for part numbers
❒ Septum nut
❒ Solid septum
❒ Insert
❒ Stainless steel needle
❒
"Installing an insert" on page 173
❒
"Changing the septum nut or
cooling tower and septum" on
page 173
❒
"Manual injection with septum
nut" on page 171
6850 Series II GC User Information
Routine Maintenance: Inlets
Maintaining a cool on-column inlet
Table 32
for details.
Manual injection with cooling tower
See Table 34 for part numbers
❒ Cooling tower
❒ Duckbill septum
❒ Insert
❒ Fused silica needle (columns ≥200 µm)
or
❒ Stainless steel needle (columns ≥250 µm)
❒
"Installing an insert" on page 173
❒
"Changing the septum nut or cooling
tower and septum" on page 173
❒
"Manual injection with cooling tower" on
page 171 (bottom) and
fused silica syringe needle" on page 174
is a
"Replacing the
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