system with a column manager base unit and two column heater/cooler modules can
accommodate as many as six columns (two columns in the base unit).
1.3.4.1 Active solvent conditioning
HPLC and UPLC applications benefit from pre-column, mobile-phase heating to improve
chromatographic separations. The column heaters in the system use an active preheater to
condition solvent as it enters the column. The preheater raises the temperature of the incoming
mobile phase (and injected sample) to the same set point as that of the column compartment.
Tip:
Active preheating is the default configuration for the system. When using the CH-A, an
optional, passive, column stabilizer is available for existing chromatographic methods not suitable
for active preheating.
1.3.5 Sample organizer (optional)
Requirement:
Verify that the sample organizer you use with your system is compatible with
sample managers that have a rotary tray.
The sample organizer stores multiple microtiter or vial plates and transfers them to and from the
sample manager. This automates processing and increases throughput.
The sample organizer’s storage shelf compartment can hold a selection of ANSI plates, which
you load into the organizer through a large, swing-open front door. Heaters and coolers thermally
condition the shelf compartment and together with the sample manager’s heater/cooler, maintain
the temperature at a set point determined by the user.
1.3.6 Detection
The optical detectors compatible with your system detect and quantify concentrations of sample
analyte. The system accommodates these detectors:
• Photodiode array (PDA)
• Photodiode array eλ (PDA eλ)
• Photodiode array with TaperSlit (PDA-TS)
• Tunable ultraviolet (TUV)
• Evaporative light scattering (ELS)
• Fluorescence (FLR)
• Refractive index (RI)
• Conductivity detector (2432)
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