Selecting An Fid Jet - Agilent Technologies 7820A Manual

Selecting an FID Jet

Table 24 Jets for capillary optimized fittings
Figure 1 ID Jet type
1 Capillary
2 High-temperature
(use with simulated
distillation)
Maintaining Your GC
Open the oven door and locate the column connection fitting at
the base of the detector. It will look like either a capillary
optimized fitting or an adaptable fitting.
Capillary optimized fitting
• If you have an application that tends to clog the jet, select a
jet with a wider tip id.
• When using packed columns in high column-bleed
applications, the jet tends to clog with silicon dioxide.
• In simulated distillation applications, the high-boiling
hydrocarbons tend to clog the jet.
For capillary optimized fittings, select a jet from
adaptable fittings, select a jet from
Part number
G1531-80560
G1531-80620
Figure 2 Capillary optimized jets
Maintaining the FID
Adaptable fitting
Detector fitting
Adapter
Table 25.
Jet tip id Length
0.29 mm (0.011 inch) 43 mm
0.47 mm (0.018 inch) 48 mm
8
Table 24. For
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