Hach-Lange LT 200 Thermostat - Manual (Page 64)

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Start up
5.3 Selecting the program
The temperature programs can be selected
totally independently for the right and the left
heating blocks. If a change of setting is
selected, the user is prompted to specify
whether the change concerns the right or the left
heating block. A choice of 3 permanently
programmed temperature programs then
appears and the user selects one by pressing
the appropriate key.
The COD program heats cuvettes for 2 hours at
148 °C.
In the cooling phase, 4 beeps indicate that the
cuvettes have cooled to 80 °C. At this point, the
cuvettes must be removed and carefully
inverted a few times. This setting is suitable for
all COD cuvette tests.
Note: Press OK to confirm your selection or press the
UP ARROW KEY to return to the program selection
screen.