3 Installing Packed Columns and Setting Analytical Flow Lines
3.3
3.
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GC-2014
3.3Single-Column Packed FID Analysis
Connecting either of the left (L) sides or right (R) sides of the dual INJ and dual FID with a
column allows for analysis with the single-column configuration.
Single-column configuration is used in following cases.
1. Background-compensation is unnecessary because the baseline level does not
increase during isothermal analysis.
2. Background-compensation is unnecessary because the baseline level does not
increase so much even during programmed temperature analysis.
1. When single-column configuration is set, unspecified flow controller does not supply gases. Make
sure to remove unspecified column to prevent deterioration.
2. Make sure to stop the FID detector gas supply (hydrogen and air) on unspecified side. (Turn the
control of the flow controller to set the pressure to zero.)
3. Do not cross the columns (L/R). It hinders correct analysis.
Fig. 3.3.1 Single-column configuration (FID)
(A column is connected to the left (L) sides.)
NOTE
Column (L)
Dual FID
L
(L) (R)
Dual INJ
R
L R
Dual AFC