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Description
PolyScience 20 L Refrigerated & Heated Circulating BathsOverview Capable of reaching temperatures as low as 40C, PolyScience Refrigerated Heated Circulating Baths provide dependable temperature control for a wide variety of laboratory cooling applications. Features Working temperatures as low as 40C and as high as +200C (varies by controller) Temperature stabilities to 0. 005C (varies by controller) Controller options with large, intuitive displays and multiple communication options Large bath openings and
Overview
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.
Features
- Working temperatures as low as -40°C and as high as +200°C (varies by controller)
- Temperature stabilities to ±0.005°C (varies by controller)
- Controller options with large, intuitive displays and multiple communication options
- Large bath openings and easy to clean surfaces
- Swivel 180™ Rotating Controllers
- 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
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' (1.83m) standard grounded electrical cord with country-specific plug
Controllers
Specifications and features for the PolyScience Refrigerated & Heated Circulating Baths vary based on the controller chosen. Some key specifications are in the table below, and additional features for each controller are listed below the table.
| - | 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 |
*DIN 12876-1 Class III devices are rated for use with flammable liquids. DIN 12876-1 Class I devices may be used with non-flammable liquids only.
Safety Rating* DIN 12876-1 Class III DIN 12876-1 Class III DIN 12876-1 Class III DIN 12876-1 Class III DIN 12876-1 Class I DIN 12876-1 Class I
Advanced Programmable Features
- 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
- 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)
Advanced Digital Features
- Working Temperature: From -40° up to +200°C
- Temperature Stability: ±0.01°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
- Intuitive 3.75” (9.5 cm) display with touch-pad control
- 4 languages: French, German, Spanish, English
- Swivel 180™ Rotating Controller
- On-board connectivity: USB-A & B, Ethernet, RS-232/RS-485, and external temperature probe
- On-screen prompts
- Automatic performance optimization and specific heat tuning
- Single-point calibration capability
Standard Digital Features
- Working Temperature: From -30° up to +170°C
- Temperature Stability: ±0.04°C
- Safety Rating: DIN 12876-1 Class I (for use with non-flammable liquids)
- Pump: 2-speed
- External Circulation: Closed-loop
- Large, universal icon and English display
- Swivel 180™ Rotating Controller
- On-board connectivity: RS-232 serial output
- On-screen prompts
- Automatic performance optimization
- Single-point calibration capability
Economy MX Features
- Working Temperature: From -30° up to +135°C
- Temperature Stability: ±0.07°C
- Safety Rating: DIN 12876-1 Class I (for use with non-flammable liquids)
- Pump: 1-speed
- External Circulation: Closed-loop
- Large, universal icon and English display
- On-screen prompts
- Single-point calibration capability
Please note: PolyScience Refrigerated & Heated Circulating Baths are manufactured at the time the order is placed and have a 2-3 week lead time.
Key Attributes
|
Type |
Stirred / Circulating Baths |
|
Incubation |
Yes |
|
Refrigeration |
Yes |
|
Temp Range (°C) |
Ambient -40 to 200 |
|
Capacity (L) |
20 |
| Circulation | Internal & External |
|
Brand |
PolyScience |
|
MaxFlow Rate (l/min) |
20.1, 13.5, 11 |
|
Temp Stability (°C) |
±0.005, ±0.01, ±0.04, ±0.07 |
|
Timer |
Yes |
|
Alarms |
Yes |
|
Digital or Mechanical |
Digital |
|
Data connection |
Yes |
|
Tank Material |
Stainless Steel |
|
Sample Agitation |
No |
|
Media Racks Available |
No |
|
Warranty (years) |
2 |
|
Weight (lb) |
130 |
|
Width (in) |
24 |
|
Depth (in) |
16.6 |
|
Height (in) |
26.9 |
Manufacturer specifications
| Model | AD20R-30 | AP20R-30 | MX20R-30 | SD20R-30 |
| Description | -30, 20 L Ref. Circulator | -30, 20 L Ref. Circulator | -30, 20 L Ref. Circulator | -30, 20 L Ref. Circulator |
| Controller Type | Advanced Digital | Advanced Programmable | MX | Standard Digital |
| Display | 3.75" Touch-Pad LCD | 4.3" SmartTouch Touchscreen | 3.25" LCD | 3.75" Touch-Pad LCD |
| Connectivity | Ethernet, USB A & B, RS232/addressable RS485, External Temperature Probe | Ethernet, USB A & B, RS232/addressable RS485, Remote On/Off, External Temperature Probe | N/A | RS232 |
| Languages Supported | 4: French, German, Spanish, English | 11: French, German, Spanish, Chinese, Portuguese, Russian, Hindi, Arabic, Italian, Korean, English | N/A | N/A |
| Time/Temperature Programs & Steps | N/A | Open Mode: No restriction on the number of programs or steps | N/A | N/A |
| Swivel 180 Rotating Controller | Yes | Yes | N/A | Yes |
| Working Temperature Range °C | -30° to 200° | -30° to 200° | -30° to 135° | -30° to 170° |
| Temperature Stability °C | ±0.01° | ±0.005° | ±0.07° | ±0.04° |
| Fluid Optimization/Specific Heat Tuning | Automatic and/or user-adjustable | Automatic and/or user-adjustable | N/A | Automatic |
| Temperature Calibration Capability | 1-point | 10-point | 1-point | 1-point |
| Working Access (L x W x D) (cm) | 25 x 31.6 x 14 cm | 25 x 31.6 x 14 cm | 25 x 31.6 x 14 cm | 25 x 31.6 x 14 cm |
| Pump Type | Pressure/Suction | Pressure/Suction | Pressure | Pressure |
| External Temperature Control Capability | Yes | Yes | N/A | N/A |
| Flammability Class (DIN 12876-1) | III (FL) | III (FL) | I (NFL) | I (NFL) |
|
Working Temperature Range °F
|
-22° to 392° | -22° to 392° | -22° to 275° | -22° to 338° |
| Working Temperature Range °C | -30° to 200° | -30° to 200° | -30° to 135° | -30° to 170° |
| Nominal Cooling Capacity @ +20C (W) | 915 | 915 | 915 | 915 |
| Reservoir Capacity (gallons) | 5.28 | 5.28 | 5.28 | 5.28 |
| Reservoir Capacity (liters) | 20 | 20 | 20 | 20 |
| Reservoir/Tank Material | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel |
| Reservoir Cover | Included | Included | Included | Included |
| DuraTop | Yes | Yes | Yes | Yes |
| LidDock | Yes | Yes | Yes | Yes |
| Cleanable Air Filter | Yes | Yes | Yes | Yes |
| Working Access (L x W x D) (inches) | 9.85 x 12.45 x 5.5 in | 9.85 x 12.45 x 5.5 in | 9.85 x 12.45 x 5.5 in | 9.85 x 12.45 x 5.5 in |
| Working Access (L x W x D) (cm) | 25 x 31.6 x 14 cm | 25 x 31.6 x 14 cm | 25 x 31.6 x 14 cm | 25 x 31.6 x 14 cm |
| Temperature Stability °F | ±0.02° | ±0.02° | ±0.13° | ±0.08° |
| Temperature Stability °C | ±0.01° | ±0.005° | ±0.07° | ±0.04° |
| Display | 3.75" Touch-Pad LCD | 4.3" SmartTouch Touchscreen | 3.25" LCD | 3.75" Touch-Pad LCD |
| Display Resolution (Set) | 0.01 | 0.01 | 0.1 | 0.1 |
| Display Resolution (Read) | 0.01 | 0.001 | 0.1 | 0.1 |
| Pump Type | Pressure/Suction | Pressure/Suction | Pressure | Pressure |
| Pump Speed | Variable | Variable | One | Two |
| Process Connections | 1/4" (F) NPT | 1/4" (F) NPT | 1/2" O.D. Barbed Tubes | 1/4" (F) NPT |
| External Temperature Control Capability | Yes | Yes | N/A | N/A |
| Flammability Class (DIN 12876-1) | III (FL) | III (FL) | I (NFL) | I (NFL) |
| Over-Temperature Protection / Failsafe Heater Control | Yes | Yes | Yes | Yes |
| Low Liquid Level Protection | Yes | Yes | Yes | Yes |
| WhisperCool Environmental Control Technology | Yes | Yes | Yes | Yes |
| Cool Command Refrigeration Technology | Yes | Yes | Yes | Yes |
| Reservoir Drain | Yes | Yes | Yes | Yes |
| Included Software | PolyTemp Viewer, USB driver | PolyTemp Viewer, TDMS file viewer, USB driver, Time/Temperature Program Generator, PolyTemp Remote iPhone application | N/A | N/A |
| Maximum Ambient Temperature °F | 95° | 95° | 95° | 95° |
| Maximum Ambient Temperature °C | 35° | 35° | 35° | 35° |
| Overall Dimensions (L x W x H) (inches) | 24 x 16.6 x 26.9 in | 24 x 16.6 x 26.9 in | 24 x 16.5 x 28 in | 24 x 16.6 x 26.9 in |
| Overall Dimensions (L x W x H) (cm) | 61 x 41.9 x 68.3 cm | 61 x 41.9 x 68.3 cm | 61 x 41.9 x 71.1 cm | 61 x 41.9 x 68.3 cm |
| Refrigerant | R404A | R404A | R404A | R404A |
| Environmental Compliance | RoHS, WEEE | RoHS, WEEE | RoHS, WEEE | RoHS, WEEE |
| Shipping Weight (pounds) | 130 | 130 | 124 | 130 |
| Shipping Weight (kilograms) | 58.9 | 58.9 | 56.2 | 58.9 |
| Part Number | AD20R-30-A11B | AP20R-30-A11B | MX20R-30-A11B | SD20R-30-A11B |
| Maximum Pressure (psi) | 4.3 | 4.3 | 2.3 | 3.5 |
| Maximum Pressure (bar) | 0.3 | 0.3 | 0.16 | 0.24 |
| Maximum Pressure Flow Rate (gpm) | 5.3 | 5.3 | 3.6 | 2.9 |
| Maximum Pressure Flow Rate (l/min) | 20.1 | 20.1 | 13.5 | 11 |
| Maximum Suction Flow Rate (gpm) | 3.9 | 3.9 | N/A | N/A |
| Maximum Suction Flow Rate (l/min) | 14.7 | 14.7 | N/A | N/A |
| Cooling Capacity @ -20°C (W) | 165 | 165 | 165 | 165 |
| Cooling Capacity @ 0°C (W) | 505 | 505 | 505 | 505 |
| Cooling Capacity @ +20°C (W) | 915 | 915 | 915 | 915 |
| Cooling Capacity @ +100°C (W) | 915 | 915 | 915 | 915 |
| Included Hardware | Nylon hose adapters for 3/8", 1/4", and 3/16" | Nylon hose adapters for 3/8", 1/4", and 3/16" | Fitting Kit for External Applications | Nylon hose adapters for 3/8", 1/4", and 3/16" |
| Heater Wattage | 1100 | 1100 | 1100 | 1100 |
| Electrical Requirements (VAC/Hz/Ph/A) | 120/60/1/13 | 120/60/1/13 | 120/60/1/13 | 120/60/1/13 |
| Regulatory Approvals | ETL | ETL | ETL | ETL |
FAQ
I would like to perform a heating / cooling program where the temperature ramps from one set point to another over time. Are the PolyScience 20 L Refrigerated & Heated Circulating Baths capable of this?
That depends on the controller used. Only the Advanced Programmable and Performance Programmable controllers can be programmed to perform ramps.
It is possible to have the circulation on without any temperature control being on?
No. If the circulation is on, then a temperature setting must be selected.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
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Product Reviews
★★★★★ 5
Fun way to learn about the planets
Format: Board book
An awesome book. One of my toddlers favorites. Love the cut outs and pictures as well as the content. Its a fun way to learn about the planets
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
★★★★★ 5
Such a great and important book
Format: Kindle
"Perseverance Makes Me Stronger" by Elizabeth Cole is an exceptional children's book that beautifully captures the essence of determination, resilience, and personal growth. Through the endearing story of young Nick and his roller skating journey, Cole delivers a powerful message that will inspire and motivate young readers.
The book revolves around Nick, a little boy who receives a pair of shiny new roller skates. Excitement quickly turns to frustration when Nick realizes that learning to skate is not as easy as he imagined. Discouraged by the challenges he faces, Nick contemplates giving up. However, with the unwavering support and guidance of his father, he learns the true meaning of perseverance.
Cole's storytelling is enchanting, and the relatable nature of Nick's struggles immediately captures the attention of young readers. The writing style is simple and accessible, making it easy for children to understand and engage with the narrative. The book is filled with colorful illustrations that vividly depict Nick's roller skating journey, further enhancing the reading experience.
One of the most commendable aspects of "Perseverance Makes Me Stronger" is the valuable life lesson it imparts. Through Nick's story, children learn the importance of persistence and the rewards that come with not giving up. The book teaches young readers that setbacks and challenges are a natural part of learning and growth, and that by persevering, they can overcome any obstacle.
The character of Nick is endearing and relatable, and children will easily connect with his feelings of frustration and self-doubt. As the story unfolds, they will witness his transformation, gaining a sense of empowerment and encouragement. Nick's journey serves as an inspiring example for young readers, showing them that with determination and support, they too can achieve their goals.
"Perseverance Makes Me Stronger" is an excellent tool for parents, educators, and caregivers to introduce children to the concept of perseverance in an engaging and relatable way. It opens up conversations about the importance of persistence, resilience, and the value of learning from mistakes. The book provides an opportunity for children to develop a growth mindset and understand that their efforts and dedication can lead to success.
In conclusion, "Perseverance Makes Me Stronger" by Elizabeth Cole is a heartwarming and impactful children's book that celebrates the power of perseverance. Through Nick's roller skating adventure, young readers are encouraged to embrace challenges, never give up, and discover their own inner strength. This delightful tale is sure to captivate young minds and leave a lasting impression, making it a valuable addition to any child's library.
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Reviewed in the United States on July 8, 2023
★★★★★ 5
Excellent children’s book on perseverance!
Format: Kindle, Format: Kindle
This is the seventh story about little Nick in the “World of Kids’ Emotions” series by author Elizabeth Cole.
I have read all the books in this series and have shared them with my young grandson over the years. Emotions can be difficult for boys and girls too!
I like how in this story Nick is trying rollerskating! He’s not doing very well and gets discouraged. Fortunately, his father offers some encouragement to persevere and keep at it!
His mother tried baking cakes. At first she did not do a good job, but later mastered the skill of baking cakes. Other examples are used throughout the book to show that trying to do your best and having a goal are great ways to approach persevering!
“Perseverance makes me stronger.” I love the positive messages that are in this book. Positive self talk and encouraging oneself are helpful tools. “No matter the outcome, at least I did try!” ”My dreams will come true because I believe in myself.”
There are some positive affirmations at the end of the book. And also a free coloring page that can be downloaded with a scan code.
The illustrations are very nice to look at and colorful. The artist did a lovely job. The illustrations go along with the storyline nicely.
The writing in this book has a pleasant flow with lots of rhyming words. “Perseverance means not quitting right away, but keep trying more and more, day after day.”
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Reviewed in the United States on June 11, 2023
★★★★★ 5
Great book to never give up
Format: Paperback
Great book! My son loves it!
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Never Give Up
Format: Kindle
This is a wonderful story, told in rhyme, by Elizabeth Cole. It’s about a boy named Nick who who falls the first time he tries his new skates. Dad and Mom share their own experiences and how they didn’t give up trying new endeavors. Eventually, Nick finds success after following his parents’s advice with gaining confidence along the way. He realizes that persevering had made him a stronger person.
Ms. Cole’s book is a must have in any teacher’s classroom library and used to create thoughtful discussions about never giving up. The illustrations are visually pleasing which will engage children. This book receives my highest recommendation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 18, 2023