3.2 Analysis using packed column
34
Installing glass packed column in oven
1
Attach the box nuts to the glass column.
Place the connection parts over both ends of the
column. The order is: box nut, washer, spring, back
ring, and silicon O-ring.
Place the back ring with its rimmed side facing the
silicon O-ring.
Place the connection parts over both ends of the
column. The order is: box nut, washer, spring, back
ring, and graphite ferrule.
Place the back ring with its un-rimmed side facing the
graphite ferrule.
Place the connection parts over injection port end of
the column. The order is: box nut, washer, spring,
sleeve, and graphite ferrule for TCD. As for the other
end, choose from above 2 ways (Silicon O-ring or
graphite ferrule) according to the analyzing
temperature.
2
Install the glass column in column oven.
Connecting by [Glass insert method]
In the glass insert method, you insert a glass insert
into the sample inlet.
(1) Insert the glass insert halfway into the sample
inlet from inside oven.
Box nut Back ring Silicon O-ring
Washer Spring
Rim
When the analysis temperature is 250C max.
(except for TCD)
If you analyze below 250C, use silicon rubber O-rings.
Box nut Back ring
Graphite ferrule
Washer
Spring
Rim
When the analysis temperature is 250C min.
(except for TCD)
If you analyze higher than 250C, use graphite ferrule.
Box nut Spring
Washer
Sleeve & graphite
ferrule for TCD
When using TCD
If you analyze with thermal conductivity detector (TCD),
place graphite ferrule for TCD and sleeve over the
detector end. Since the sleeve can work as a back ring,
the ring is not required.
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