Installation of Capillary Column(Graphite Vespel Ferrule)
Required devices¶
No. |
Parts name |
Category |
Required number |
Note |
|---|---|---|---|---|
① |
Spanner (1/4inch×5/16inch) |
1 |
||
② |
Capillary Cutter (Plate Type) |
1 |
Option |
|
③ |
NUT, SSNE16/012 |
1 |
For Graphite Vespel |
|
④ |
Graphite Vespel Ferrule |
1 |
||
⑤ |
Column Installation Jig (for INJ) |
1 |
||
⑥ |
Septum |
1 |
For positioning. Used septum is acceptable. |
Procedures¶
Step1¶
Stop the instrument. Then, on the instrument monitor or workstation, check that the temperature of the column oven is lower than 40 °C, check that the temperatures of the injection port and detector are 50 °C or lower, and check that the gas supply is stopped and there is no residual pressure.
Step2¶
Draw the column through the septum (⑥)
The septum is used for positioning the ferrule. Used septum is acceptable.
The septum will be removed in a later step. Use a cutter to cut open the septum.
Step3¶
Cut the end of column with capillary cutter (②) etc.
After drawing through the septum, cut the end of the column to remove remaining septum.
Step4¶
Draw the column through the nut (③) and graphite Vespel ferrule (④).
The tapered surface of the graphite Vespel ferrule (④) should be on the nut side.
Step5¶
Pass the column through the column installation jig (for INJ) (⑤).
・Adjust the column so that the end of the column is aligned with the end of the jig.
・The length of the inserted column for SPI should be "40 mm".
Step6¶
Tighten the nut (③) and the column installation jig (for INJ) (⑤) with a spanner(①) while fixing the septum.
If the position of the septum is not fixed, the length of the inserted column will vary.
Step7¶
Remove the column installation jig (for INJ) (⑤).
Step8¶
Pull the column oven door latch toward you to open the column oven door.
Step9¶
Hang the column on the column hanger.
Step10¶
Install a column on the injector.
Step11¶
Tighten the nut (③) by hand, and tighten the nut with the spanner for column nut, 5/16 x 1/4 (①) one turn.
Remove the positioning septum.
Be careful so that the graphite Vespel ferrule and nut do not become detached from the column.
Be careful not to move the positioning septum
Tighten the nut with the positioning septum lightly pressed against the nut.
Step12¶
Close the column oven door.
Step13¶
Start the GC.
If the graphite Vespel ferrule is new, increase the temperature of the column oven to the temperature used in the analysis, cool the column oven, and additionally tighten the nut on the injector side.
If the ferrule is new, leakage may occur at the ferrule when increasing or decreasing the column oven temperature.