Refrigerated/Heated Circulating Baths

Known for ease of use and useful innovation, our Circulating Baths set the standard for design, performance and value.  Capable of reaching temperatures as low as -20°C, PolyScience Refrigerated/Heated Circulating Baths provide dependable temperature control for a wide variety of laboratory cooling applications and uphold our reputation for innovation, product quality and refrigeration expertise.

To learn more about our Refrigerated/Heated Circulating Baths, download our free information guide here!

Refrigerated Circulators with
Advanced Programmable Temperature Controller

Key Specifications

Working Temperature: From -40° up to +200°C 
Temperature Stability: ±0.005°C 
Safety Rating: DIN 12876-1 Class III (for use with flammable liquids) 
External Temperature Control Capability: Yes 
Pump: Variable-speed 
External Circulation: Open- or closed-loop 

  • LidDock™ self-stowing reservoir cover
  • DuraTop™ insulating, chemical-resistant top deck
  • WhisperCool® Environmental Control System
  • Cool Command™ modulated refrigeration system
  • Reservoir drain
  • Washable air filter

Key Features

  • OpenMode time time/temperature programming (no restrictions on number of programs or steps)
  • Intuitive 4.3” (10.9 cm) SmartTouch display
  • 11 languages: French, German, Spanish, Chinese, Portuguese, Russian, Hindi, Arabic, Italian, Korean, English
  • Variable speed pump with open- and closed-loop external circulation capability
  • Swivel 180™ Rotating Controller
  • On-board connectivity: USB-A & B, Ethernet, RS-232/RS-485, remote on/off and external temperature probe
  • Event scheduling (time & date) with real-time clock
  • Review temperature trends for up to 10 days
  • Multiple selectable “home” screens
  • On-screen help
  • Automatic and/or user-adjustable performance optimization
  • 10-point calibration capability
  • Includes Enhanced Performance Hardware & Software Package (Pt100 temperature probe, USB flash drive for data logging, stainless steel fittings and tubing adapters, PolyScience LabVIEW Virtual Instrument, iPhone application download)

Performance Specifications & Part Numbers

7 Liter Refrigerated Circulator, -20°C 7 Liter Low Profile Refrigerated Circulator, -20°C 7 Liter Refrigerated Circulator, -40°C 15 Liter Refrigerated Circulator, -40°C 15 Liter Refrigerated Circulator, -30°C 20 Liter Refrigerated Circulator, -30°C 28 Liter Refrigerated Circulator, -30°C 45 Liter Refrigerated Circulator, -25°C
Working Temperature Range -20° to 200° C -20° to 200° C -40° to 200° C -40° to 200° C -30° to 200° C -30° to 200° C -30° to 200° C -25° to 135° C
Nominal Cooling Capacity @ +20C (W)
Heater Wattage 1100 W (60Hz)
2200 W (50Hz)
1100 W (60Hz)
2200 W (50Hz)
1100 W (60Hz)
2200 W (50Hz)
1100 W (60Hz)
2200 W (50Hz)
1100 W (60Hz)
2200 W (50Hz)
1100 W (60Hz)
2200 W (50Hz)
1100 W (60Hz)
2200 W (50Hz)
2200 W (60Hz)
2200 W (50Hz)
60Hz Part Number
50Hz Part Number AP07R-20-A12E AP7LR-20-A12E AP07R-40-A12E AP15R-40-A12E AP15R-30-A12E AP20R-30-A12E AP28R-30-A12E AP45R-20-A12E
45 liter bath is 208-240 VAC, 50/60 Hz

Vertical Tabs

Intuitive and Precise

Intuitive and Precise

Our controllers display it all: internal bath temperature, external bath temperature, set-point and more–all on one easy to read screen.

Whether equipped with the entry-level controller or our most sophisticated icon-driven SmartTouch™ interface controller, PolyScience units are extremely easy to use. Clear navigational buttons and menu prompts guide you through setup, making operational and temperature set-point changes simple and precise.

Advanced Programmable temperature controllers guide you through setup and operation using universal icons, on-screen help and logical menus.



Extensive connectivity capabilities enable you to control and communicate with your circulator in a wide variety of ways, including Ethernet, RS-232, addressable RS-485, USB-A and USB-B.

Safe and Reliable

Safe and Reliable

Redundant over-temperature protection, high and low temperature limits and alarms alert you instantly to conditions that fall outside normal operating parameters. Lockout capability prevents unauthorized operational changes.

The elimination of RoHS-specified chemicals substances from fabricated components contributes to a cleaner, safer environment. In addition, all of our baths comply with WEEE, IEC 61010-1, IEC 61010-2-010, IEC 61326-1, DIN 12876 and are CE and ETL certified.

Class III Safety

Our Advanced Series Controllers feature temperature and float shut-off systems meeting DIN 12876-1 Class III standards for use with flammable liquids.

Total Control

Total Control

  • Review and run even the most complex ramp and soak temperature program quickly and easily without any guesswork.
  • Highly intuitive programming application lets you add, edit or delete steps quickly. Settable time or temperature priority ensures programs run as intended.
  • Plain-text program naming and preview function make it easy to identify stored programs.
  • Convenient upload/download utility allows you to easliy share or backup stored programs.
  • The intelligent scheduling application even lets you schedule a program to run automatically – hours, days, weeks, even months in the future.