5.3 Inserting tubes and plates
Caution! Microplates melt at extremely high temperatures.
Only heat microplates made of polystyrene to a maximum 70 °C.
1. Select a suitable exchangeable thermoblock and mount it (refer to page 16).
2. Place the tubes or plate on the thermoblock.
For optimum temperature control, transfer the micro test tubes to the exchangeable
thermoblocks using Iso-Racks. The Iso-Rack reduces the heat exchange of the thermoblock
with the environment. If necessary close the Iso-Rack lid.
3. If using the microplate thermoblock: put on the lid.
5.4 Time counting mode
The time counting function enables temperature control and/or mixing for a limited period of
time. The unit will hold a constant temperature even after the set time has elapsed.
There are two ways to measure the time of the temperature control processes:
Time control:
•
Time counting begins immediately when "START/STOP" is pressed. The red indicator lamp
in the key lights up.
Temp control:
•
Time counting only starts when the nominal temperature value has been reached.
While the unit heats up to reach the nominal temperature, the colon of the time display
will flash. This signals that the unit is active. When the nominal temperature has been
reached and time counting starts, the red indicator lamp of the "START/STOP" key lights up.
To terminate the process early, press the "START/STOP" again.
1.
Hold the "PROGR." key while switching on the unit. Hold the key until the display either
shows time control or temp control.
2.
Using the "TIME" arrow keys, set time counting.
On the display, the time will appear on the bottom left. The time can be set from 1 minute to 99
hours 59 minutes. Pressing the key once will alter the setting by one minute. During the run the
remaining run time will be displayed in minutes. The last minute is counted down in seconds.
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Mixer HC · User Manual ·