Agilent Technologies 7820A

132
Agilent 7820 GC Service
To Prepare for Chromatographic Checkout
Because of the differences in chromatographic performance
associated with different consumables, Agilent strongly
recommends using the parts listed here for all checkout tests.
Agilent also recommends installing new consumable parts
whenever the quality of the installed ones is not known. For
example, installing a new liner and septum ensures that they will
not contribute any contamination to the results.
1 Check the indicators/dates on any gas supply traps.
Replace/recondition expended traps.
Install new consumable parts for the inlet and prepare the correct
injector syringe (and needle, as needed).
Recommended part for
checkout
Part number
Split splitless inlet
Syringe, 10-µL
5181-1267
O-ring
5188-5365
Septum
5183-4757
Liner
5183-4711 (FID)
5062-3587 or 5181-3316
(other detectors)
Packed column inlet
Syringe, 10-µL
5181-1267
O-ring
5080-8898
Septum
5183-4757
To Check FID Performance
1 Gather the following:
 Evaluation column, HP-5 30 m — 0.32 mm — 0.25 µm
(19091J-413)
 FID performance evaluation (checkout) sample
(5188-5372)
 Chromatographic-grade isooctane (wash solvent)
 4-mL solvent and waste bottles or equivalent for
autoinjector
 2-mL sample vials or equivalent for sample