The Grant Optima™ GD100 series of stirred water baths and circulators with digital control provides excellent value for money for straightforward applications requiring accurate temperature control up to a maximum of 100ºC.
The Grant GD100 immersion thermostat incorporates Intelligent Control Optimisation™ (ICO) for adaptive intelligent PID temperature control.
Grant GD100 series systems offer a choice three economy plastic (P) tanks or five stainless steel (S) tanks with different capacities combined with the Grant Optima™ GD100 digital thermostat for accurate temperature control.
- 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 alarm - alerts 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
- Low liquid protection by float switch
- Cooling/heating range: ambient +5 to 99ºC with plastic (P) tank, or 0 to 100ºC with stainless steel (S) tank
- Stability ± 0.02ºC
Note: Alternatively, the Grant Optima™ GD100 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.
The Grant Optima™ GD100 series of water baths and circulators with plastic (P) tanks represents excellent value for money for straightforward applications requiring accurate temperature control in the range of ambient plus 5 to 99ºC.
- Robust plastic construction, double-walled for rigidity, easy to clean; designed for use with water
- Convenient recessed handholds for carrying/repositioning the unit
- Heating range ambient +5 to 99ºC
- Stability ± 0.02ºC
- Choice of three different plastic tanks sizes:
Bath model GD100-P5 - 5 litre
Bath model GD100-P12 - 12 litre
Bath model GD100-P18 - 18 litre
Accessory options for GD100-P series baths
Lids and polypropylene spheres
Between 60ºC and 99ºC a lid or layers of polypropylene spheres should be used to help reduce evaporation/heat loss and avoid sample contamination. Polypropylene spheres are particularly useful where tall vessels need to be immersed.
Lids
PL5 flat stainless steel lid for GD100-P5
PL12 curved plastic lid for GD100-P12
PL18 curved plastic lid for GD100-P18
Polypropylene spheres
PS20 pack of polypropylene spheres:
1 pack required for GD100-P5 and for GD100-P12
2 packs required for GD100-P18
Rack systems and raised shelves
Grant custom designed racks and shelves enable you to optimise the available baths capacity. Raised shelves allow shallow vessels to be accommodated.
Racks
QR rack for GD100-P5 - 1 QR rack per bath
| Tube size |
Number of tubes per QR |
| Ø 10-13 mm |
30 |
| Ø 16-19 mm |
16 |
| Ø 24 mm |
10 |
| Ø 30 mm |
5 |
| 0.5 ml |
44 |
| 1.5 ml |
35 |
VR rack for GD100-P12: - 2 VR racks per bath
VR rack for GD100-P18: - 4 VR racks per bath
| Tube size |
Number of tubes per VR |
| Ø 10-13 mm |
65 |
| Ø 16-19 mm |
36 |
| Ø 24 mm |
23 |
| Ø 30 mm |
14 |
| 0.5 ml |
102 |
| 1.5 ml |
75 |
Raised shelves
Reduce the effective liquid depth to allow shallow vessels to be placed in the baths. Not available for GD100-P5.
RS14 raised shelf for GD100-P12
RS22 raised shelf for GD100-P18
The Grant Optima™ GD100 series of water baths and circulators with stainless steel (S) tanks represents excellent value for money for straightforward heating and cooling applications requiring accurate temperature control in the range of 0 to 100ºC.
- Robust plastic outer case and stainless steel tank - easy to clean, resists corrosion
- Dual position fitting of the thermostat ensures convenient access in all situations
- Convenient recessed handholds for carrying/repositioning the unit
- Heating/cooling* range 0 to 100ºC
- Stability ± 0.02ºC
- Choice of five different stainless steel tanks sizes:
Bath model GD100-S5 - 5 litre
Bath model GD100-S12 - 12 litre
Bath model GD100-S18 - 18 litre
Bath model GD100-S26 - 26 litre
Bath model GD100-S38 - 38 litre
*Minimum operating temperature without accessory cooling is room temperature plus 5ºC (room temperature plus 15ºC for S5 tanks).
Accessory options for GD100-S series baths
Lids and polypropylene spheres
Between 60ºC and 100ºC and below room temperature a lid or layers of polypropylene spheres should be used to help reduce evaporation/heat loss and avoid sample contamination. Above 100ºC a lid must be used.
Note: Polypropylene spheres are particularly useful where tall vessels need to be immersed.
Lids
FG5 flat stainless steel lid for GD100-S5
LG12 gabled, hinged, removable stainless steel lid for GD100-S12
LG18 gabled, hinged, removable stainless steel lid for GD100-S18
LG26 gabled, hinged, removable stainless steel lid for GD100-S26
LG38 gabled, hinged, removable stainless steel lid for GD100-S38
Polypropylene spheres
PS20 pack of polypropylene spheres:
1 pack required for GD100-S5 and GD100-S12
2 packs required for GD100-S18 and GD100-S26
3 packs required for GD100-S38
Rack systems and raised shelves
Grant custom designed racks and shelves enable you to optimise the available baths capacity. Raised shelves allow shallow vessels to be accommodated.
Racks
QR rack for GD100-S5 - 1 QR rack per bath
| Tube size |
Number of tubes per QR |
| Ø 10-13 mm |
30 |
| Ø 16-19 mm |
16 |
| Ø 24 mm |
10 |
| Ø 30 mm |
5 |
| 0.5 ml |
44 |
| 1.5 ml |
35 |
VR rack for
GD100-S12: -
2 VR racks per bath
VR rack for
GD100-S18: -
4 VR racks per bath
VR rack for
GD100-S26: -
4 VR racks per bath
VR rack for
GD100-S38: -
6 VR racks per bath
| Tube size |
Number of tubes per VR |
| Ø 10-13 mm |
65 |
| Ø 16-19 mm |
36 |
| Ø 24 mm |
23 |
| Ø 30 mm |
14 |
| 0.5 ml |
102 |
| 1.5 ml |
75 |
Raised shelves
Reduce the effective liquid depth to allow shallow vessels to be placed in the baths. Not available for GD100-S5.
RS14 raised shelf for GD100-S12
RS22 raised shelf for GD100-S18
RS28 raised shelf for GD100-S26
RS28 or RS38 raised shelf for GD100-S38
Accessory cooling systems
To allow systems to operate at or below room temperature by means of a cooling coil dipped into the bath. Designed for minimal impact on working area.
Refrigerated immersion coolers
Consist of a cooling coil connected to a refrigeration unit by a flexible pipe. Extract heat continuously, with the bath control unit controlling temperature.
C1G immersion cooler , temperature range 0 to 40ºC, suitable for all GD100-S series baths
C2G immersion cooler, temperature range -15 to 40ºC, suitable for GD100-S26 and GD100-S38
Heat exchange coil
Designed to be attached to a supply of cooling tap water or a refrigerated circulator
CW5 heat exchange coil , temperature range 2ºC above coolant temperature, suitable for all GD100-S series baths