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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
4.1 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
It works to divide a room, but it's not easy to use.
Color: Grey, Size: 6 Panel
This comes in multiple pieces and you have to build every single piece including the cloth that is between the two poles. There are plastic clips to hold the sections together, but they easily come off if you move the dividers the wrong way or try to reposition it. The only thing holding it up is rectangular shaped feet on the bottom and they are a pain when you hit it with your toes. It works if you need to divide a room, but its not pretty and there are far better options. It's cheaply made and has a habit of falling down if you are trying to use it in a straight or slightly angled line.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 26, 2022
★★★★★ 4
Nice divider
Color: Black, Size: 6 Panel
Nice divider. Set up is a bear. I am a bit concerned with stability. Overall I like it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026
★★★★★ 5
Great privacy room divider
Color: Black, Size: 6 Panel, Color: Black, Size: 6 Panel
I got this room divider for our game room that shares the garage/laundry room, to separate the spaces. I was happy that it was relatively easy to put together in less than an hour with nothing more than a screwdriver (provided) although I used a small handheld drill.
The instructions were pretty straightforward and easy to understand as everything was labeled.
I have 2 small grandkids at home running around while I put this together so my timeline to completion might be longer than others.
It recommends 2 people to assemble, but I was able to complete alone in about 40 minutes total and as I said I used a small handheld drill, (although it does come with a small Philips screwdriver) which is the only tool you need for assembly.
The first two panels took me about 20 minutes but the other 4 were simple repeats after the initial 2. After all 6 panels were assembled the plastic clips to piece them together were literally a "SNAP" to put on.
The poles are made of metal and the panels are made of a very sturdy almost canvas like fabric. When held up to the light not a lot shined through so very good for privacy.
You can snap them together in sections and have 2 separate panels of 3 or what ever configuration you want. They are easy to move and bend around furniture or other obstacles, also fold flat together if you need to put them aside for storage.
This worked out just as we had planned, very easy to move around when needed and I am very happy with this product. I loved how simple it was to put together, easy instructions, and the durability and functionality of it.
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Reviewed in the United States on December 29, 2024
★★★★★ 5
Good
Color: Black, Size: 6 Panel
Love it , just what so needed , easy to put together (some what ) …
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Reviewed in the United States on May 16, 2026
★★★★★ 3
Decent for the price. Instructions suck but most people should be able to figure it out. More below.
Color: Black, Size: 6 Panel, Color: Black, Size: 6 Panel
SUMMARY:
3 stars from me because it's firmly average. It's fine for the price. Assembly and materials are alright but I can see some caveats depending on your circumstances. Assembly instructions do a subpar job of pointing out some details.
ASSEMBLY INSTRUCTIONS:
Maybe it's because I'm autistic and/or building model kits and assembling stuff is my jam, but I honestly thought people were exaggerating when they were complaining about the instructions and I'd be able to flex my ~superior assembly skills.~ I was wrong! These instructions genuinely suck, and whoever is responsible for making them should be ashamed.
The instructions do a poor job of calling out some details regarding orientation of parts, and some of the images do not actually match the physical parts.
For example, it does not really outline the assembly of the end panels clearly, and I can see someone accidentally using the wrong poles. I've drawn over a photo to show what you should do to try and make it clearer. Additionally, the manual shows a flathead screw for bolting the feet into position, but the actual screw is not a flathead. It also does not point out the counterbore, so if you aren't paying attention you may put the foot pads onto the wrong side of the foot. It's also missing the fact that you need to use another one of the plastic pieces when you finish assembling a panel.
ACTUAL ASSEMBLY & MATERIALS:
To their credit, all of my bags were clearly labeled. The assembly process wasn't difficult. It's mostly just tedious and requires a fair amount of space. I was able to assemble it by myself without any real difficulty. However, the way it's assembled means two things.
One, the fabric parts aren't removable without disassembly. So if you want to use this in an environment where they would require cleaning, I would seriously recommend looking for another option. Or, you could buy this just to use the frame pieces and then somehow buy or make your own fabric pieces designed to be removable with velcro or something.
Two, because of the materials I really don't have a lot of faith in this thing surviving disassembly and reassembly. Like a lot of sorta-cheap-but-convenient furniture, it uses those spring-button connections and plastic inserts with self-tapping screws. Those things are not really meant to be disassembled and rethreaded. It also relies a lot on the tension of the poles and the fabric to keep everything rigid and squared, which I think puts a lot of pressure on the aforementioned buttons, plastic inserts, and the hollow metal rods. So I feel like that will also cause issues with disassembly and reassembly.
Basically once this thing is assembled, it's not really meant to be disassembled. The best you can do is spot-clean the fabric if you need to.
Speaking of the fabric, I didn't see any labels on them or anything in the manual that says what they are, but they feel like some kind of polyester. They generate static electricity pretty easily, and pet hair and debris sticks easily. So that's another downside of them not being easily removable.
For the most part it does seem pretty stable. The poles seem to be pretty uniform in length so they're all making contact with my floor. Obviously this isn't structural so it shouldn't be supporting anything, but the two main feet seem to be doing fine with keeping this thing upright.
CLOSING THOUGHTS:
Really, it's fine for what it is, but it could be better in a lot of little ways and the substandard quality of the instructions just seems unprofessional to me, which is why I'm being so harsh with my rating. Depending on your needs and environment you may want to consider a different option. Preferably one that is made to be disassembled with better materials, and/or one with fabric pieces made to be removed easily.
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Reviewed in the United States on May 28, 2023
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