Julabo PRESTO W85/W85t Refrigerated Heating Recirculators
Image SKU Description Filling Volume Temperature Range Temperature Stability Electrical Quantity Price Add to Cart
9421852.16 PRESTO W85 9.5 L -85 to 250 °C ±0.05 to ±0.1 °C 3 x 208V / 60Hz / 30A - without plug 1 Each $83,644
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9421852.16.T PRESTO W85t 9.5 L -85 to 250 °C ±0.05 to ±0.1 °C 3 x 208V / 60Hz / 52A - without plug 1 Each $90,596
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Temperature Control System / Process System

Reactor temperature control, tests for all kinds of substances or temperature simulation – the PRESTO are made for highly precise temperature control and rapid temperature changes. Highly efficient components allow extremely fast compensation of exothermic and endothermic reactions. Lab users benefit from high flow rates, constant pressure, and a controlled build-up of pump pressure. Permanent internal monitoring and self-lubricating pumps contribute to the PRESTO's long service life. The integrated 5.7" industrial touch screen displays all important information clearly and concisely enhancing ease of use considerably.

Your advantages

  • 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
  • 5.7" industrial color TFT touch screen
  • USB (Host und Device)
  • Ethernet
  • SD-Card slot
  • RS232
  • Modbus
  • RS485 (Accessory)
  • Profibus DP (Accessory)
  • Stand-by input
  • Water Cooled


Part Number 9421852 9421852.T
Model Series PRESTO
Category Temperature Control
Working Temperature Range -85 to 250°C
Temperature Control ICC
Temperature Stability ±0.05 to ±0.1°C
Setting / Display Resolution 0.01°C
Integrated Programmer 8x60 steps
Temperature Display TFT Touchscreen
Heating Capacity 5.5kW 12.5kW
Cooling Capacity (Medium:JULABO Thermal | Ethanol) 2.8kW @ 200°C | 2.5kW @ 20°C / 2.4kW @ 0°C / 2.4kW @ -20°C / 2.4kW @ -40°C / 2.2kW @ -60°C / 0.4kW @ -80°C
Pump Capacity Flow Rate 35 to 80 l/min
Pump Capacity Flow Pressure 0.48 to 3 bar
Pump Capacity Flow Pressure 50 cSt
Pump Connections M30x1.5
Refrigerant Stage 1 R507
Filling Volume Refrigerant Stage 1 700 g
Global Warming Potential for R507 3985
Carbon Dioxide Equivalent Stage 1 2.79 t
Refrigerant Stage 2 R23
Filling Volume Refrigerant Stage 2 680 g
Global Warming Potential for R23 14800
Carbon Dioxide Equivalent Stage 2 10.064 t
External Pt100 Sensor Connection Integrated
Digital Interfaces RS232
SD memory card
Optional: RS485, Profibus
Analog Connection Input / Output Optional
Ambient Temperature 5 to 40°C
Dimensions W x L x H 61 x 84.5 x 125 cm
Weight 335 kg
Sound Pressure Level (distance 1 m) Max. 69 dBA
Process Volume Min. (active heat exchanger volume) Liters 9.5 L (5 L)
Internal Usable Expansion Vol. (liters) 7 L
Classification According to DIN12876-1 Classification III (FL)
Cooling of Compressor 2-stage Water
Cooling Water Connection G ¾" male with barbed fittings for tubing ½" lD
Cooling Water Consumption 2 to 6 l/min
Cooling Water Temperature <30°C
Cooling Water Differential Pressure 0.5 bar
Voltage 3 x 208-230V/60Hz/30A - Without Plug 3 x 208-230V/60Hz/52A - Without Plug

Tip: Counter-cooling your PRESTO with a Recirculating Cooler

If there is no cooling water, the PRESTO W85/W85t can be cooled down with a recirculating cooler with a cooling capacity of 7 kW at a flow temperature of 15°C. The required circulating pump has to ensure a flow rate of 6 l/min at a counter-pressure of 0.5 bar. The recommended minimum tank volume is 30 liters.


Product Data Sheet
PRESTO W85 Product Data Sheet
PRESTO W85t Product Data Sheet
Optimal Temperature Solution Whitepaper

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