Instruments - USA Ploy Science

For five decades, PolyScience has responded to the needs of laboratory, chemical, medical, industrial, and plastics markets with unparalleled innovation, passion and user-focus. Our dedication to quality, ease of operation and reliability has helped us become a global company that spans six continents.
Our Refrigerated Circulators, Heated Circulators, Chillers, Recirculating Coolers, Water Baths and special-purpose products are designed to simplify tasks, take less space, integrate more seamlessly and perhaps most important, make your work productive and enjoyable.

Poly science /Preston Industries USA

Poly Science is a leading producer of constant temperature control equipment refrigerated circulators, heating circulators, chillers, heat exchangers, water baths, and custom temperature control equipment.

All of our products are researched and designed by our own highly trained Engineering staff and are closely examined by our Quality Assurance team to ensure that our customers receive products that consistently meet and exceed expectations.

Our ISO 9001:2000 manufacturing process combines the high quality and attention to detail of hand craftsmanship with the precision and efficiency of ultramodern testing and measuring processes. The result is unbeatable product reliability and efficiency, at a very competitive price. The majority of our products carry CSA and CE approvals to ensure conformance to global standards wherever they are used.

Poly Science Circulators

One of the best lab partners you'll ever have.


Reservoir sizes ranging from 6 to 75 liters

Heated-only and Refrigerated/Heated models (over 90 models, including an Immersion Circulator)

Six types of digital temperature controllers, from entry level to ultra sophisticated

Intuitive setup and operation, featuring either multi-language help or screen prompts (depending on model)

Swivel 180™

Need to position your bath at an odd angle or read the temperature from across the room? We've got it covered. The patent-pending Swivel 180™ Rotating Controller on Poly Science Circulating Baths lets you move the extra large temperature display independently from the bath, enabling you to clearly read the display from anywhere within a 180° viewing radius, with the press of a button.

Highly Intuitive User Interface

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


Our lid stowing system gives the lid a convenient place to perch while you add liquid or work with samples, yet doesn't interfere with controller viewing or operation. Condensation drains back into the reservoir as well, keeping you lab bench clean, dry and uncluttered.


The precision-molded phenolic bath top remains cooler at high temperatures and resists laboratory chemicals. Plus, it's easily cleaned and disinfected.

Large Bath Opening

Access has been increased to allow for maximum utilization of the circulating bath.


Quiet, energy-efficient heat removal. Our patent-pending WhisperCool™ Environmental Control System, standard on most Poly Science 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.

Class III Safety

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

Pressure and Suction Pump

Powerful, variable-speed pumps are available on Performance and Advanced Series Temperature Controllers and are well suited for open- or closed-loop external applications.

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."

Ergonomic Design

You can easily reposition the circulating bath with convenient, built-in handles that don't catch other equipment.

Safe and Reliable

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.

Easy Hook-up Fluid Connections

1/4" NPT fittings with hose adapters included for 3/8", 1/4" and 3/16"; 1/4" NPT to M16 adapter also included with 50 Hz models.