GC-2025 Column Oven

Installing the Capillary Column


Tools Required

10x12 wrench (standard accessory), two 6x8 wrenchs (standard accessory), capillary cutter (option, Part No. 221-50595-91)



Shutdown the system.


Pass the capillary column entrance side through a hexagon cap nut and the graphite ferrule.

Cap nut 221-16325-01

Graphite ferrule 0.5mm 221-32126-05

Graphite ferrule 0.8mm 221-32126-08


Fix the graphite ferrule provisionally using the graphite fixing jig. When doing so, let the capillary column protrude about 10mm from the graphite fixing jig, and cut the column using a capillary cutter etc. at the tip of the fixing jig. If the fixing jig for the SPL is used, the position will be fixed at 34mm from the column tip.

Capillary cutter 221-50595-91



Change the graphite fixing position to 15mm if intending to conduct splitless analysis using a wide-bore column of 0.53mm inner diameter.


Using the fixing jig, fix the graphite ferrule on the detector side of the capillary column as well. Since, normally, a locking nut is used, a cap nut need not be used ahead of the graphite ferrule (if analyses are conducted at column temperatures over 350 deg.C, it may be a good thing to reduce the thermal capacity by using a small cap nut in the same way as the entrance side).

For the FID 69mm (make it 2 to 3mm shorter if a metal capillary column is used.)

Remove the fixing jig once the position of the graphite ferrule is set.


Pull the lever on the bottom left of the door towards you to open the column oven.



Hang the column on the column hanger.


Insert the column into the sample injection port from the column oven side.


After tightening the nut by hand, fix in place by turning the nut another half-turn using the wrench.


In the same way, insert the column into the detector from the column oven side, and after turning the nut by hand to tighten it, fix it by tightening it about a half-turn further with the wrench.


Close the column oven door and start up the system.

Maintenance Top ; GC-2025 Main ; GC-2025 Column Oven ; GC-2025 Detector ; GC-2025 Sample Injection Port