Routine Maintenance: Inlets
Maintaining a cool on-column inlet
Released: March 2004 6850 Series II GC User Information page 169 of 256
Manual injection with a cooling tower and duckbill septum
If you are doing this type of manual injection, use either fused silica or metal
removable stainless steel needles. Use Table 34 to choose the correct insert,
syringe, and other hardware.
Table 34. Manual Injection Hardware—Cooling Tower and Duckbill
Septum
Column type and inside diameter Insert (part no.)
Fused silica
530 µm 19245-20580 (no rings)
320 µm 19245-20525 (5 rings)
250 µm 19245-20515 (6 rings)
200 µm 19245-20510 (1 ring)
Aluminum-clad, 530
µm
19245-20780 (4 rings)
Glass capillary 19245-20550 (3 rings)
Syringe and needle
For fused silica needles
Fused silica needle syringe 9301-0658
Replacement needles, fused silica,
0.18 mm (6 pk)
19091-63000
Replacement Teflon® ferrule for syringe 0100-1389
For stainless steel needles
Removable needle syringe, 10 µL 5182-9633
Replacement needles, 0.23 mm (3 pk) 5182-9645
Inlet hardware
Cooling tower assembly 19230-80625
Duckbill septum
(for columns > 200-µm id)
19245-40050
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