PRESTO process systems
working temperature range -93 °C to +250 °C
An entirely new generation of highly dynamic temperature control systems by JULABO. The new PRESTO systems are designed for precise temperature control as well as rapid temperature changes, making them ideal for reactor vessels, material stress tests, or temperature simulations. These instruments cover a working temperature of -93 to +250 °C with high cooling and heating capacity.
Highly efficient components give these instruments the ability to compensate for exothermic and endothermic reactions with extraordinary speed. Permanent internal monitoring and self-lubricating pumps contribute to the new PRESTO’s long service life. The integrated 5.7-inch color industrial-grade touch panel is one of the identifying characteristics of the new PRESTO. It gives the user a clear and well-organized view of important information while greatly improving user-friendliness. Once in operation, the new PRESTO® units are whisper quiet and barely audible in a laboratory. The new PRESTO® units are extremely robust and work reliably even if the ambient temperature climbs as high as +40 °C. Multiple interfaces permit remote control of the PRESTO® across networks and in superordinated control systems. Closed side panels without ventilation slits reduces to a minimum the amount of space needed to operate.
Product Features
- For highly precise, external temperature applications
- Rapid heating and cooling
- Wide working temperature ranges without changing fluids
- Highest performance with small footprint
- Space-saving design optimizes space utilization in your lab
- Ethernet interface
- SD-Card slot
- Highly dynamic ICC temperature control, stability to ±0.01 °C
- Electronic level indication
- Integrated programmer
- Unsurpassed power and efficiency
- Profibus DP (Accessory)
Product Overview
PRESTO A30/A38/A40/W40/A41/W41
Compact process systems down to -45 °C

The smaller PRESTO process systems are available with natural or synthetic refrigerants, depending on the model, and cover a working temperature range from -45 °C to +250 °C.
Model | PRESTO A30 | PRESTO A38 | PRESTO A40 | PRESTO A41 |
---|---|---|---|---|
Working temperature range (°C) | -30 ... +250 | -45 ... +250 | -40 ... +250 | -45 ... +250 |
Temperature stability (°C) | ±0.01 ... ±0.05 | ±0.01 ... ±0.05 | ±0.01 ... ±0.05 | ±0.01 ... ±0.05 |
Cooling capacity (kW) | 0.5 | 0.76 | 1.2 | 1.32 |
Heating capacity (kW) | 2.1 | 1.8 | 1.8 | 1.8 |
Pump capacity flow rate (l/min) | 25 | 0 ... 50 | 0 ... 40 | 0 ... 50 |
Pump capacity flow pressure (bar) | 0.5 | 0.1 ... 1.6 | 0.1 ... 1.7 | 0.1 ... 1.6 |
Model | PRESTO W40 | PRESTO W41 |
---|---|---|
Working temperature range (°C) | -40 ... +250 | -45 ... +250 |
Temperature stability (°C) | ±0.01 ... ±0.05 | ±0.01 ... ±0.05 |
Cooling capacity (kW) | 1.2 | 1.32 |
Heating capacity (kW) | 1.8 | 1.8 |
Pump capacity flow rate (l/min) | 0 ... 40 | 0 ... 50 |
Pump capacity flow pressure (bar) | 0.1 ... 1.7 | 0.1 ... 1.6 |
PRESTO A45/A45t
Air-cooled process systems down to -45 °C

The A45 air-cooled process system can be used flexibly and independently of cooling water supply. They compensate exothermic and endothermic reactions extremely quickly.
Model | PRESTO A45t | PRESTO A45 |
---|---|---|
Working temperature range (°C) | -45 ... +250 | -45 ... +250 |
Temperature stability (°C) | ±0.05 ... ±0.1 | ±0.05 ... ±0.1 |
Cooling capacity (kW) | 3.5 | 3.5 |
Heating capacity (kW) | 12 | 6 |
Pump capacity flow rate (l/min) | 0 ... 80 | 0 ... 80 |
Pump capacity flow pressure (bar) | 0.1 ... 3 | 0.1 ... 3 |
PRESTO W50/W50t
Water-cooled process system down to -50 °C

The rapid compensation of reactions even at higher ambient temperatures is the domain of the water-cooled W50 units. High heating and cooling capacity paired with powerful pumps.
Model | PRESTO W50 | PRESTO W50t |
---|---|---|
Working temperature range (°C) | -50 ... +250 | -50 ... +250 |
Temperature stability (°C) | ±0.05 ... ±0.1 | ±0.05 ... ±0.1 |
Cooling capacity (kW) | 7.5 | 7.5 |
Heating capacity (kW) | 6 | 12 |
Pump capacity flow rate (l/min) | 0 ... 80 | 0 ... 80 |
Pump capacity flow pressure (bar) | 0.1 ... 3 | 0.1 ... 3 |
PRESTO W55
Fast temperature control for larger applications

The powerful W55 regulates temperatures with high precision and convinces with faster cool-down and heat-up times. It is ideal for use in large external applications such as reactor temperature control, material stress testing or temperature simulation.
Model | PRESTO W55 |
---|---|
Working temperature range (°C) | -55 ... +250 |
Temperature stability (°C) | ±0.05 ... ±0.1 |
Cooling capacity (kW) | 15 |
Heating capacity (kW) | 15 |
Pump capacity flow rate (l/min) | 0 ... 80 |
Pump capacity flow pressure (bar) | 0.1 ... 3 |
PRESTO W56/W58
The most powerful, single-stage, highly dynamic temperature control systems

The water-cooled PRESTO W56, W56x, and W58x can temperature control applications with high performance requirements very quickly and efficiently. Even at low temperatures, these models have large power reserves for demanding external applications.
Model | PRESTO W56 | PRESTO W56x | PRESTO W58x |
---|---|---|---|
Working temperature range (°C) | -56 ... +250 | -50 ... +250 | -50 ... +250 |
Temperature stability (°C) | ±0.05 ... ±0.1 | ±0.05 ... ±0.1 | ±0.05 ... ±0.1 |
Cooling capacity (kW) | 25.8 | 25.8 | 33 |
Heating capacity (kW) | 27 | 27 | 27 |
Pump capacity flow rate (l/min) | 0 ... 80 | 0 ... 70 | 0 ... 70 |
Pump capacity flow pressure (bar) | 0.1 ... 3 | 0.1 ... 5.5 | 0.1 ... 5.5 |
PRESTO A70/A80/W80
2-stage process system for low temperatures

As air- or water-cooled versions, the units with 2-stage refrigeration unit offer high cooling and heating capacities for lowest temperatures down to -80 °C.
Model | PRESTO A70 | PRESTO A80t | PRESTO A80 | PRESTO W80 |
---|---|---|---|---|
Working temperature range (°C) | -75 ... +250 | -80 ... +250 | -80 ... +250 | -80 ... +250 |
Temperature stability (°C) | ±0.01 ... ±0.05 | ±0.01 ... ±0.05 | ±0.01 ... ±0.05 | ±0.01 ... ±0.05 |
Cooling capacity (kW) | 1.12 | 1.2 | 1.2 | 1.2 |
Heating capacity (kW) | 1.8 | 3.4 | 1.05 | 1.05 |
Pump capacity flow rate (l/min) | 0 ... 40 | 0 ... 40 | 0 ... 40 | 0 ... 40 |
Pump capacity flow pressure (bar) | 0.1 ... 1.7 | 0.1 ... 1.7 | 0.1 ... 1.7 | 0.1 ... 1.7 |
Model | PRESTO W80t |
---|---|
Working temperature range (°C) | -80 ... +250 |
Temperature stability (°C) | ±0.01 ... ±0.05 |
Cooling capacity (kW) | 1.2 |
Heating capacity (kW) | 3.4 |
Pump capacity flow rate (l/min) | 0 ... 40 |
Pump capacity flow pressure (bar) | 0.1 ... 1.7 |
PRESTO A85/A85t/W85/W85t
Powerhouses among the process system

High cooling capacities enable extremely low temperatures down to -85 °C possible. The high heating capacity, particularly with the A85t and the W85t, provides even more flexibility in the application.
Model | PRESTO A85 | PRESTO A85t | PRESTO W85t | PRESTO W85 |
---|---|---|---|---|
Working temperature range (°C) | -85 ... +250 | -85 ... +250 | -85 ... +250 | -85 ... +250 |
Temperature stability (°C) | ±0.05 ... ±0.1 | ±0.05 ... ±0.1 | ±0.05 ... ±0.1 | ±0.05 ... ±0.1 |
Cooling capacity (kW) | 2.5 | 2.5 | 2.8 | 2.8 |
Heating capacity (kW) | 6 | 15 | 15 | 6 |
Pump capacity flow rate (l/min) | 0 ... 80 | 0 ... 80 | 0 ... 80 | 0 ... 80 |
Pump capacity flow pressure (bar) | 0.1 ... 3 | 0.1 ... 3 | 0.1 ... 3 | 0.1 ... 3 |
PRESTO W91
11 kW cooling capacity for dynamic temperature change down to -91 °C

Best heating capacity combined with high cooling capacity – those are the key features of the W91 units. The units are just as ready for embedding into pilot plants as they are for use in material and component testing.
Model | PRESTO W91tt | PRESTO W91 | PRESTO W91x | PRESTO W91ttx |
---|---|---|---|---|
Working temperature range (°C) | -91 ... +250 | -91 ... +250 | -91 ... +250 | -91 ... +250 |
Temperature stability (°C) | ±0.05 ... ±0.2 | ±0.05 ... ±0.2 | ±0.05 ... ±0.2 | ±0.05 ... ±0.2 |
Cooling capacity (kW) | 11 | 11 | 11 | 11 |
Heating capacity (kW) | 36 | 18 | 18 | 36 |
Pump capacity flow rate (l/min) | 0 ... 80 | 0 ... 80 | 0 ... 70 | 0 ... 70 |
Pump capacity flow pressure (bar) | 0.1 ... 3 | 0.1 ... 3 | 0.1 ... 5.5 | 0.1 ... 5.5 |
PRESTO W92
Highest cooling capacity of 27 kW and heating capacity up to 36 kW

The W92 class process systems are extremely powerful and can also simulate extreme environmental conditions. They are used, for example, in the temperature control of vacuum chambers for component testing in the aerospace industry.
Model | PRESTO W92tt | PRESTO W92 | PRESTO W92x | PRESTO W92ttx |
---|---|---|---|---|
Working temperature range (°C) | -92 ... +250 | -92 ... +250 | -92 ... +250 | -92 ... +250 |
Temperature stability (°C) | ±0.05 ... ±0.2 | ±0.05 ... ±0.2 | ±0.05 ... ±0.2 | ±0.05 ... ±0.2 |
Cooling capacity (kW) | 27 | 27 | 27 | 27 |
Heating capacity (kW) | 36 | 18 | 18 | 36 |
Pump capacity flow rate (l/min) | 0 ... 80 | 0 ... 80 | 0 ... 70 | 0 ... 70 |
Pump capacity flow pressure (bar) | 0.1 ... 3 | 0.1 ... 3 | 0.1 ... 5.5 | 0.1 ... 5.5 |
PRESTO W93
Full cooling capacity in the low temperature range

W93 process systems offer users high cooling capacity for dynamic applications even in the lowest temperature ranges. They work with natural refrigerants and are also very energy efficient thanks to state-of-the-art technologies.
Model | PRESTO W93 | PRESTO W93x |
---|---|---|
Working temperature range (°C) | -93 ... +250 | -93 ... +250 |
Temperature stability (°C) | ±0.05 ... ±0.2 | ±0.05 ... ±0.2 |
Cooling capacity (kW) | 19.5 | 19.5 |
Heating capacity (kW) | 27 | 27 |
Pump capacity flow rate (l/min) | 0 ... 80 | 0 ... 70 |
Pump capacity flow pressure (bar) | 0.1 ... 3 | 0.1 ... 5.5 |