CORIO CD 39L Open Heating Bath Circulator

Category Stirred / Circulating Baths
Manufacturer Julabo
Country of manufacture Germany

CD-B33 For internal and external temperature applications with transparent or stainless steel bath tanks and pump connections JULABO open heating bath circulators with bath tanks made of stainless steel are designed for internal and external temperature applications. They are primarily used for internal temperature control directly within the bath tank. External closed systems may be connected via the integrated pump connections. Models are available with a variety of bath sizes and other functional characteristics.

A variety of bath inserts for laboratory glassware, bath covers, and adjustable floors are available as accessories. Common applications include temperature control of measurement cells, photometers, and samples; heating of glass flasks; and temperature testing of food, luxury articles, and materials.


  • Bright, white, easy to read display
  • Easy pump change-over between internal and external circulation
  • USB connection
  • For internal and external applications
  • Precise temperature control
  • Very quiet
  • Easy switching between internal and external circulation
Key Attributes
Type Stirred / Circulating Baths
Incubation Yes
Refrigeration Accessory only
Temp Range (°C) A +20 to 150
Capacity (L) 26-39
Circulation Yes
Brand Julabo
MaxFlow Rate (l/min) 16
Temp Stability (°C) ±0.03
Timer Yes
Alarms Yes
Digital or Mechanical Digital
Data connection USB
Tank Material Stainless steel
Sample Agitation No
Media Racks Available Yes
Warranty (years) 1
Weight (lb) 46.3
Width (in) 35.8
Depth (in) 14.2
Height (in) 16.9


Manufacturer Specifications
Dimensions and volumes
(W × L × H)
35.8 x 14.2 x 16.9 in.
Filling volume 26 ... 39 l
Weight 46.3 lbs
Pump connections M16x1 male
Barbed fittings inner diameter 8/12 mm
Temperature values
Working temperature range +20 ... +150 °C
Temperature stability ±0.03 °C
Setting the resolution of the temperature display 0.1 °C
Temperature display resolution 0.01 ... 0.1 °C
Ambient temperature +5 ... +40 °C
Data based on voltage version: 115V/60Hz (Nema N5-15 Plug)
Performance values
Heating capacity 1 kW
Pump capacity flow rate 16 l/min
Pump capacity flow pressure 4.8 bar
Viscosity max. 50 cST
Bath tank Stainless steel
Bath cover accessory
Usable bath opening
(W x L / D)
26 x 12.6 / 5.9 in.
Cooling coil accessory
according to DIN12876-1
Classification III (FL)
IP Code
according to IEC 60529
IP 21
Pump function Pressure Pump
Pump type Immersion Pump
Temperature control PID1
Absolute temperature calibration 1 Point Calibration
Temperature displayTemperature display LED
Temperature settingTemperature setting Keypad


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