1 Overview
The Column Heater-Active (CH-A) is a column heating module that manages and maintains the
column temperature for ACQUITY Arc systems, ACQUITY Arc Bio systems, and ACQUITY UPLC
systems, including ACQUITY UPLC H-Class Series, ACQUITY UPLC H-Class Bio Series, and
ACQUITY UPLC I-Class Series systems. A standard active preheater (APH) device heats
incoming solvent before it enters the column.
Note: An optional passive column stabilizer device is available as an alternative configuration to
support existing chromatographic methods not suitable for active preheating.
The CH-A column compartment accommodates LC columns of dimensions as large as 4.6-mm
internal diameter (ID) and 150-mm length. For additional information about supported columns,
see Column configurations.
The CH-A module is positioned between the detector and the sample manager in the system
stack, as shown in the following figure.
December 4, 2019, 715005052 Version 02 (previously released as Rev.B)
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