Refrigerated Circulating Baths

Available in 40 different models, the latest generation of PolyScience Refrigerated/Heated Circulating Baths uphold our reputation for innovation, product quality and refrigeration expertise. Our lab-and operator-friendly Circulating Baths set a new industry standard for design, performance and value.

PolyScience Refrigerated Circulating Baths

A versatile range of products to fit every need.

Capable of reaching temperatures as low as -40°C, PolyScience Refrigerated/Heated Circulating Baths provide dependable temperature control for a wide variety of laboratory cooling applications.


  • Working temperatures from -40° to + 200°C
  • Temperature stabilities to ±0.005°C
  • Capacities from 7 to 75 liters
  • Four controller types with large, intuitive displays and multiple communication options
  • Large bath openings and easy to clean surfaces
  • Swivel 180™ Rotating Controllers
  • LidDock™ Lid Stowing System
  • DuraTop™ Chemical Resistant Deck
  • WhisperCool® Environmental Control System
  • Cool Command™ Technology

PolyScience Refrigerated/Heated Circulators come with the following accessories:

  • Reservoir cover
  • Bypass tubing
  • Male inlet and outlet adapters for 3/8, 1/4, and 3/16" (.95, .63, and .47 cm) tubing, 1/4" to M16 adapters also included on 50Hz units
  • 6' (1.83 m) standard grounded electrical cord with country-specific plug

Select a Controller

  Advanced Programmable (AP) Advanced Digital (AD) Standard Digital (SD) MX
Maximum Temperature 200°C 200°C 170°C 135°C
Temperature Stability ±0.005°C ±0.01°C ±0.04°C ±0.07°C
Pump Type Pressure/Suction, Variable-Speed Pressure/Suction, Variable-Speed Pressure Only, 2-Speed Pressure Only, 1-Speed
Programmability OpenMode - unlimited programs and steps N/A N/A N/A
Connectivity USB-A & B, Ethernet, RS-232/RS-485, Remote On/Off, External Temperature Probe USB-A & B, Ethernet, RS-232/RS-485, External Temperature Probe RS-232 N/A

Select a Reservoir

  7 Liter Low-Profile 7 Liter Space-Saving 7 Liter Space-Saving 15 Liter 15 Liter 20 Liter 28 Liter 45 Liter 75 Liter
Minimum Temperature -20°C -20°C -40°C -30°C -40°C -30°C -30°C -25°C -20°C
Cooling Capacity @ 20°C 200 W 200 W 360 W 915 W 1000 W 915 W 915 W 1400 W 1400 W
Working Access (L x W x D) 6.2 x 5.6 x 5 in
15.7 x 14.2 x 12.7 cm
6.2 x 5.6 x 5 in
15.7 x 14.2 x 12.7 cm
6.2 x 5.6 x 5 in
15.7 x 14.2 x 12.7 cm
8.4 x 9 x 5.5 in
21.2 x 27.6 x 14 cm
8.4 x 9 x 5.5 in
21.2 x 27.6 x 14 cm
9.9 x 12.5 x 5.5 in
25 x 31.6 x 14 cm
12.4 x 14.1 x 5.5 in
31.4 x 35.9 x 14 cm
21.6 x 15.7 x 5.5 in
54.9 x 39.8 x 14 cm
21.6 x 15.7 x 9.4 in
54.9 x 39.8 x 23.9 cm


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.



Quiet, energy-efficient heat removal. Our patented WhisperCool® Environmental Control System, standard on most PolyScience Refrigerated/Heated Circulating Baths, reduces noise levels below conversational speech at a distance of two meters. In addition, our adaptive environmental technology optimizes performance, reducing overall energy consumption and prolonging equipment life.

Cool Command™ Technology

Achieve the temperature you want, when you want it. Cool Command™ efficiently and quickly extracts heat, even at elevated temperatures, ensuring the most precise temperature control.

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.

Simplified Setup and Maintenance

Simplified Setup and Maintenance

The front-mounted drain makes it easy to remove liquid from the bath and clean it. Our washable air filter helps keep the circulator running at peak performance and energy efficient. DuraTop™, and all surfaces, are chemical resistant and easy to sanitize. Setup instructions are printed "behind the grille."