Techne TE-10A Mode D'emploi page 22

12 Recommended liquids:
Temperature Liquid
-40°C to 0°C 40% water, 40% ethylene glycol and 20% alcohol
-20°C to 30°C 50% water and 50% ethylene glycol
5°C to 95°C Water, preferably de-ionised with neutral pH
10°C to 150°C Dow Corning Silicone Oil 200 series *
10°C to 250°C Dow Corning Silicone Oil 210H/100cs series*
*Warning: check gel life at top end of range.
Extraction may be necessary at high temperatures; always check the manufacturer's data and safety
sheets before using any of the liquids.
In all cases the OVER-TEMPERATURE CUT-OUT must be set correctly for the liquid being used and
the temperature at which it is to operate
13 A bath that is fitted with a lid or insulating ball blanket gives the best operating conditions. A lid or
ball blanket will prevent vapour loss, heat loss and give better temperature control. If an open bath
is used above 80°C (ie where steam or other readily condensing vapours are present) the operation
of the unit, particularly the digital display on the TE-10D and the TU-20D, may be affected.
Below about 80°C a cover becomes less important but will still give better temperature control.
14 The symbols next to the indicator lamps on the front panel of the thermoregulators have the
following meanings:
15 Symbols on the switch have the following meanings:
: the power indicator
: the heater indicator
: the over-temperature indicator
I : mains switch On
O : mains switch Off
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