Price:
$658.00
SE
QIWEI DHC-1505-A Thermostatic Bath -15 ℃/0.1 ℃
-15~99.9℃5/6LInternal/external circulation

$691.00
SE
QIWEI DHC-2005-A Thermostatic Bath -20 ℃/0.1 ℃
-20~99.9℃5/6LInternal/external circulation

$728.00
SE
Qiwei DHC-2005-B Low Temperature Thermostat -20 ℃/0.01 ℃
-20~99.99℃5/6LInternal/external circulation

$696.00
SE
Qiwei DHC-1505-B Low Temperature Thermostat -15 ℃/0.01 ℃
-15~99.99℃5/6LInternal/external circulation

If you don't know how to choose "Thermostat", please consult customer service.