5 Micro GC Channels
Column
64 Agilent 990 Micro GC User Manual
Column
Altering the GC channels requires a trained Agilent service engineer.
Other columns are available by contacting Agilent Technologies.
Table 14 shows several standard columns and their selected applications.
All columns except the HayeSep A (160 °C) and MES (110 °C) columns can be used up to
180 °C. Exceeding this temperature will cause the column to lose efficiency instantly and the
column module will need replacement. All channels have a built-in protection that prevents a
setpoint above the maximum temperature.
Table 14 Agilent Micro GC columns and applications
Column/Phase type Target components
Molsieve 5Å Permanent gases (N
2
/O
2
separation), methane, CO, NO, and so forth. 20 m required for O
2
-Ar
baseline separation), He, Ne, H
2
. Natural gas and biogas analysis. Optional Retention Time
Stability (RTS) configuration.
Hayesep A Hydrocarbons C1–C3, N
2
, CO
2
, air, volatile solvents, natural gas analysis.
CP-Sil 5 CB Hydrocarbons C3–C10, aromatics, organic solvents, natural gas analysis.
CP-Sil 19 CB Hydrocarbons C4–C10, high boiling solvents, BTX.
CP-WAX 52 CB Polar volatile solvents, BTX.
PLOT Al2O3/KCl Light hydrocarbons C1–C5 saturated and unsaturated. Refinery gas analysis.
PoraPLOT U Hydrocarbons C1–C6, halocarbons/freons, anesthetics, H
2
S, CO
2
, SO
2
, volatile solvents, N
2
O.
Separation of ethane, ethylene, and acetylene.
PoraPLOT Q Hydrocarbons C1–C6, halocarbons/freons, anesthetics, H
2
S, CO
2
, SO
2
, volatile solvents, N
2
O.
Separation of propylene and propane, coelution of ethylene and acetylene.
CP-COX CO, CO
2
, H
2
, Air (coelution of N
2
and O
2
), CH
4
.
CP-Sil 19CB for THT THT and C3–C6+ in Natural Gas Matrix.
CP-Sil 13CB for TBM TBM and C3–C6+ in Natural Gas Matrix.
MES NGA Unique column specially tested for MES in natural gas (1 ppm).
Volamine NH
3
(40ppm ~ 20%)
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