The Grant Optima™ GD120 series of digitally controlled stirred water baths and circulators provides outstanding performance and value for money for more sophisticated applications requiring accurate temperature control up to a maximum of 120ºC.

Grant GD120 series systems combine the versatile Grant Optima™ GD120 digital immersion thermostat with a choice of three economy plastic (P) tanks or five stainless steel (S) tanks with different capacities.

The Grant GD120 immersion thermostat incorporates Intelligent Control Optimisation™ (ICO) for adaptive intelligent PID temperature control and includes a powerful integral pump, making GD120 systems suitable both for immersing samples and circulating temperature controlled fluid to external devices. It includes a convenient timer function for reaction timing and a variable high temperature alarm setting. The temperature range and heater power are automatically limited according to the liquid type selected.

• Simple-to-use rotor plus two keys provide access to the interactive interface for fast, accurate set-up
• Clear digital display for instant reassurance - easy to read from a distance
• Visual and audible alarms alert you when your attention is required
• Operating setpoint plus 3 adjustable preset temperatures for convenience
• User calibration facility for optimum accuracy at the required operating temperature
• Integral pump - max. flow rate 17L/min
• Low liquid protection by float switch
• User adjustable overtemperature cut-out protects your samples and your workplace
• Maximum cooling/heating range (dependent on tank size): ambient +5 to 99ºC with plastic (P) tank, or -15 to 120ºC with stainless steel (S) tank
• Stability ± 0.02ºC

Note: Alternatively, the Grant Optima GD120 immersion thermostat can also be used to regulate the temperature in vessels other than Grant tanks. Such vessels must have vertical sides and a maximum wall thickness of 35 mm for rectangular tanks, 30 mm for circular tanks (300 mm diameter) and a capacity of up to 50 litres. The control unit is attached to other vessels by means of a clamp.