The Shimadzu CTO-40C CL column oven was developed to maintain the temperature of
the LC system column and flow lines at a constant temperature, in order to provide
heightened analysis reproducibility and separation performance. The oven is an
air-circulated thermostatic chamber for the Shimadzu Liquid Chromatography system. In
this instrument, the temperature is controlled by a heater for heating and a Peltier
element for cooling, and the temperature around the column is kept uniform by agitating
the inside of the thermostatic chamber with an air circulation fan.
Excluding the thermostatic chamber, the other instruments necessary for liquid
chromatography such as a solvent delivery unit, autosampler, detector, and system
controller are sold separately.
For instruments that suit your purpose of use, contact your Shimadzu representative.
1.1 Features
nIn addition to columns, the thermostatic chamber allows installation of flow line parts
in it including a mixer and automatic column switch valves.
The main purpose of this column oven is to keep the column temperature constant. The
thermostatic chamber can store flow line parts in it including a mixer and automatic
column switch valves as well as columns. Installing these in the oven isolates them from
the influence of ambient temperature and makes for more stable analysis. Shorter
plumbing distances also reduce dead volume in the flow lines.
nTime program functions are available for setting the temperature even in standalone
use.
Use of a system controller (CBM-40 CL) permits finer control, like starting analysis when
temperature stabilizes and stopping analysis when leaks or problems are detected.
nThe automatic speed control of the air circulation fan provides a stable temperature
control.
The speed of the air circulation fan is automatically controlled based on the temperature
setting. At high temperatures, the air circulation ratio is increased to keep the
temperature constant, and at temperatures close to the ambient temperature, the air
circulation ratio is decreased to suppress heat generation due to the air circulation. The
fan speed is controlled so as to remain constant even when there are fluctuations in the
power supply. This enables stable temperature control.
nThe built-in thermal fuse and leak sensor ensure safety.
To ensure safe use, the thermal fuse cuts off the power to the heater if the temperature
rises abnormally. In addition, if some liquid leaks inside, the gas sensor (flammable
organic solvent) or liquid leak sensor (aqueous solvent) issues an error to automatically
stop temperature control.
1Overview
CTO-40C CL 1
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