Routine Maintenance: Inlets
Maintaining a cool on-column inlet
Released: March 2004 6850 Series II GC User Information page 168 of 256
Automatic or manual injection with septum nut
Choose a needle, septum nut, and insert based on your column inside diameter.
See Table 33 to determine the correct hardware.
Septa
Use a solid septum (5181-1261) for manual injection, or a through-hole septum
(5181-1260) for auto injection.
Table 33. Automatic or Manual Injection with a Stainless Steel
Needle
Column type and
inside diameter
Needle
part no.*
Septum nut
part no.
Insert
part no.
Fused silica:
530 µm id 5182-0832**
G1545-80520
19245-20580 (no rings)
320 µm id 5182-0831
19245-80521
19245-20525 (5 rings)
250 µm id 5182-0833
19245-80521
19245-20515 (6 rings)
200 µm id Use cooling tower and duckbill septum 19245-20510 (1 ring)
Aluminum-clad,
530 µm id 5182-0832 G1545-80520 19245-20780 (4 rings)
Glass capillary
320 µm id 5182-0831 19245-20670 19245-20550 (3 rings)
250 µm id 5182-0833 19245-20670 19245-20550 (3 rings)
*
Order removable needle syringe, part no. 5182-0836. If doing a manual injection,
you must also order a plunger button, part no. 5181-8866.
** Many other needles can be used to inject onto a 530-µ column. Consult the
Agilent catalog for consumables and supplies for details.
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