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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 ★★★★★
Based on 333 reviews
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Product Reviews
★★★★★ 5
Bruno Moda Italy Men's Prince Classic Oxford Shoes - A Timeless Blend of Elegance and Comfort
Size: 12 Wide, Color: Brown
My experience with Bruno Moda Italy Men's Prince Classic Modern Formal Oxford Wingtip Lace-Up Dress Shoes has been truly exceptional, and I am delighted to share my positive review of these shoes that seamlessly marry classic style with modern comfort.
Timeless Design:
The standout feature of the Bruno Moda Italy Men's Prince Classic Oxford Shoes is their timeless design. The wingtip lace-up style, coupled with meticulous detailing and a classic silhouette, exudes a sense of sophistication and elegance. These shoes are a perfect embodiment of timeless formal fashion.
Craftsmanship Excellence:
The craftsmanship of these Oxfords is nothing short of excellent. The attention to detail, from the precisely stitched wingtip patterns to the well-finished lace-up closure, showcases the dedication to creating a high-quality and aesthetically pleasing pair of formal shoes. The use of premium materials adds to the overall luxurious feel.
Comfortable Fit:
Beyond their stylish exterior, the Bruno Moda Italy Oxfords offer a surprisingly comfortable fit. The interior is lined with a soft and breathable material, and the cushioned insole provides ample support. This thoughtful approach to comfort ensures that these shoes are not only eye-catching but also wearable for extended periods without sacrificing comfort.
Versatile Style:
These Oxfords effortlessly transition between classic and modern styles. Whether paired with a tailored suit for a formal event or worn with smart-casual attire for a sophisticated everyday look, the Bruno Moda Italy Men's Prince Classic Oxfords adapt seamlessly to various wardrobe choices. Their versatile style makes them a wardrobe staple for any well-dressed man.
Durable Construction:
Durability is a key feature of these formal shoes. The high-quality construction, including a sturdy sole and well-sewn seams, ensures that they withstand regular use without showing signs of wear and tear. The durability of these Oxfords adds to their overall value and longevity.
Secure Lace-Up Closure:
The secure lace-up closure of the Bruno Moda Italy Oxfords not only contributes to their classic look but also provides a secure and adjustable fit. The laces allow for customization based on individual foot shapes and preferences, ensuring a snug fit that enhances both comfort and stability.
Affordable Luxury:
Considering their impeccable design, craftsmanship, comfort, versatility, and durability, these Oxfords offer an affordable avenue for indulging in luxury footwear. The reasonable price point makes them an accessible choice for individuals seeking a pair of formal shoes that exude elegance without a hefty price tag.
Overall Satisfaction:
In conclusion, the Bruno Moda Italy Men's Prince Classic Modern Formal Oxford Wingtip Lace-Up Dress Shoes have exceeded my expectations with their timeless design, craftsmanship excellence, comfortable fit, versatile style, durable construction, secure lace-up closure, and affordable luxury. These Oxfords have become my go-to choice for formal occasions, impressing not only with their appearance but also with their comfort and durability. Highly recommended for men who appreciate the perfect blend of classic style and modern comfort in their formal footwear. Elevate your formal wardrobe with the Bruno Moda Italy Men's Prince Classic Oxfords!
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Reviewed in the United States on March 7, 2024
★★★★★ 4
Nice shoes for about a year and a half
Size: 13 Wide, Color: Brown, Size: 13 Wide, Color: Brown
I bought these shoes about a year and a half ago and they are comfortable and look much more expensive than they actually are. Today, I noticed them starting to tear a little bit, but if I can replace them every 18 months for this price, it is probably still a better value than high end shoes. The grip is good for dress shoes and has held up well, and they are a good fit that does not cause blisters from excessive rubbing. I might not choose these if I need to wear them every day because of their lifespan, but for a once or twice a week pair of dress shoes, they are a good value.
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Reviewed in the United States on May 25, 2025
★★★★★ 5
Runs big but great shoe!
Size: 12 Wide, Color: Black
Great looking shoe at a very good price! Runs big, I had to get the next size down for my son.
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Fantastic Shoe for the Price
Size: 9.5 Wide, Color: Wingtip Black
Okay, I’m used to spending big bucks on men’s dress shoes. I’m talking $300 plus for American made shoes. They are recraftable (resole-able) for another $100 each time.
But since Covid, I don’t go to the office as often. One of my black dress shoes needs to be re-soled, and it will be. Just not now.
So I ran into these shoes on Amazon. It’s hard to argue with the price. Literally 10% of what I have been paying. So, are these shoes 90% lower in quality?
The short, simple answer is, surprisingly, no. Just the opposite.
Upon receipt, I inspected them carefully and they looked pretty darned decent. I was looking for any excuse to plop them back in the box and return them. I couldn’t find anything.
I appreciate that the leather upper is smooth and mildly shiny. This is a wing tip style shoe, so I’m impressed that the extensive stitching was evenly spaced. The leather detailing that I expect on a wing tip is also all there.
Inside the shoe, it is lined from the toes all the way to the heel box… nice! And that leather feels surprisingly supple. That is something I would expect on a much more expensive shoe. But definitely not at this price point.
Hmm.
I even liked the wax laces they chose. They are a little thicker and have more than adequate length. The shoe’s eyelets have interior facing metal grommets to protect against stretching and tear out of the leather and helps protect the laces against friction wear, as they are tightened and loosened over time. Now having that detail, at this price point, has raised both of my eyebrows.
Double hmm. Now I am really impressed.
The only thing that I didn’t like was that the stitching—that joins the uppers to the sole—is white. I needed to polish these shoes anyway, so I figured I’d see what would happen if I put black polish on the stitching.
I’m happy to say that the uppers shine up very nicely, to a high gloss. This was done with just a little bit of buffing, using a traditional horse hair bristled brush. And followed by a buffing cloth. Although I didn’t do it, the leather is smooth enough that I probably could have spit shined them.
And those pesky white stitches on the top side of the soles? Well I’m happy to report that they are now definitely black.
Turning the shoe over, I can visually see a lump where the shank is supposed to be. That’s a good thing. Not all shoes have a shank. It helps to support the arch. That’s another nice detail. I am expecting the shank to be plastic at this price point. So I am utterly shocked to report to you that a magnet sticks to the bottom of the shoe. That shank is steel! Now I am amazed! We’re talking mind blown, Purple smoke everywhere.
Speaking of details, I was very surprised to see the nicely done wing tip detailing, from on top of the shoe, carried over to the bottom of the sole. Wow. I have never seen that before. That’s surprising.
Now it is important to point out that the sole is some man made material. Definitely not leather. But that’s okay. Especially in the wet, leather wears out quickly, if you don’t wear rubber over shoes. One less thing to fuss about.
The heel itself has a band/layer of rust brown material sandwiched between black layers. I wonder if that is a cork or bamboo material? Having walked in these shoes, on concrete and tile floors, last week, there is a noticeable level of cush, or give. They will definitely not to be confused with sneakers. But for dress shoes, this is a pleasant and surprising experience.
The first day, I wore them at home, over the weekend and I’m glad I did that. They needed time to adjust to my feet. Any dress shoe that I have ever worn needs that.
But after that, these shoes have been pleasant enough to walk around in at work.
I’d have to say that these shoes give me at least 90% of what I would expect from my $300+ shoes for around 10% of the cost.
In my estimation, at their current price point, they constitute an excellent deal.
And especially if you are just breaking into the business world and need a good pair of interview shoes, these are definitely respectable… just be sure to put black polish on the white stitches.
Oh, BTW, I have wider feet and I ordered the shoe wide. After the initial stretching, they fit nicely.
So, in the final analysis, what do I think? I have to say, yes, these shoes definitely get my recommendation. Especially if price is a huge factor, then these shoes constitute an excellent deal.
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Reviewed in the United States on March 20, 2023
★★★★★ 5
Great dress shoe
Size: 10.5 Wide, Color: Black
Wow. Very impressed with these.
Would purchase again.
Comfortable enough for my teenage son, my husband and I very impressed with their look. Great for any special occasion.
Ours appear to be all leather. Even the sole. These will last a lifetime if cared for.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026