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Description
PolyScience 20 Liter Stainless Steel Open Bath SystemsOverview An economical alternative to integrated heating baths for liquid temperature up to +150C. Controller bridge rests securely on the deep drawn stainless steel reservoir, yet is easily removed for tank cleaning. Generous bath opening provides ready access to samples and the included bath cover improves stability. Features Working temperatures from ambient +10 up to 150C (MX Controller up to 135C) Advanced Programmable, Advanced Digital or MX
Overview
An economical alternative to integrated heating baths for liquid temperature up to +150°C. Controller bridge rests securely on the deep drawn stainless steel reservoir, yet is easily removed for tank cleaning. Generous bath opening provides ready access to samples and the included bath cover improves stability.
Features
- Working temperatures from ambient +10° up to 150°C (MX Controller up to 135°C)
- Advanced Programmable, Advanced Digital or MX Temperature Controller
- 6, 10, 20 or 28 liter reservoir
- DuraTop™ Chemical Resistant Bridge, Swivel 180™ Rotating Controller (on Advanced Programmable and Advanced Digital models)
- Lidded opening for optional cooling coil
- External circulation capability
- Complies with DIN 12876-1 Class I safety requirements for use with non-flammable liquids
- Includes bath cover
Controllers
Specifications and features for the PolyScience Stainless Steel Open Bath Systems 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 | Advanced Digital | Economy MX | |
| Temp. Range (°C) | Ambient +10°C to 150°C | Ambient +10°C to 150°C | Ambient +10°C to 135C |
| Temp. Stability | ±0.01°C | ±0.01°C | ±0.07°C |
| External Temp. Control | Yes (probe not included) | Yes (probe not included) | No |
| Pump | Pressure/Suction, Variable-Speed | Pressure/Suction, Variable-Speed | Pressure only, 1-speed |
| Programmability | Ten 100-step programs | N/A | N/A |
| External Circulation | Open or closed loop | Open or closed loop | Closed loop |
| Safety Rating* | DIN 12876-1 Class III | DIN 12876-1 Class III | DIN 12876-1 Class I |
*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.
Advanced Programmable Features
- Time/temperature programming (ten 100-step programs)
- Intuitive 4.3” (10.9 cm) SmartTouch™ display
- 6 languages: French, German, Spanish, Chinese, Arabic, English
- Variable speed pump with open- and closed-loop external circulation capability
- Swivel 180™ Rotating Controller
- On-board connectivity: USB-A & B, Ethernet, RS232/485, 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
- 5-point calibration capability
Advanced Digital Features
- 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, RS232/485, and external temperature probe
- On-screen prompts
- Automatic performance optimization and specific heat tuning
- Single-point calibration capability
Economy MX Features
- Large, universal icon and English display
- On-screen prompts
- Single-point calibration capability
Please note: PolyScience circulating baths are manufactured at the time the order is placed and have a 2-3 week lead time.
Key Attributes
| Incubation | Yes |
| Refrigeration | Accessory |
| Temp Range (°C) | Ambient +10 to 150 |
| Capacity (L) | 20 |
| Circulation | Internal & External |
| Brand | PolyScience |
| MaxFlow Rate (l/min) | 20.1, 13.5 |
| Temp Stability (°C) | ±0.01, ±0.07 |
| Timer | Yes |
| Alarms | Yes |
| Digital or Mechanical | Digital |
| Data connection | Yes |
| Tank Material | Stainless Steel |
| Sample Agitation | No |
| Media Racks Available | Yes |
| Warranty (years) | 2 |
| Weight (lb) | 60 |
| Width (in) | 20.9 |
| Depth (in) | 13.5 |
| Height (in) | 14.9 |
Manufacturer specifications:
Controller |
Advanced Programmable |
Advanced Digital |
Economy MX |
Sku Number |
AP20S150-A11B |
AD20S150-A11B |
MX20S135-A11B |
Working Temperature Range °C |
Ambient +10° to 150° |
Ambient +10° to 150° |
Ambient +10° to 135° |
Reservoir Capacity (liters) |
20 |
20 |
20 |
Reservoir/Tank Material |
Stainless Steel |
Stainless Steel |
Stainless Steel |
Reservoir Cover |
Included |
Included |
Included |
DuraTop |
Yes |
Yes |
Yes |
Working Access (L x W x D) (inches) |
10.4 x 9 x 6 in |
10.4 x 9 x 6 in |
10.4 x 9 x 6 in |
Temperature Stability °C |
±0.01° |
±0.01° |
±0.07° |
Display |
4.3" SmartTouch Touchscreen |
3.75" Touch-Pad LCD |
3.25" LCD |
Display Resolution (Set) |
0.01 |
0.01 |
0.1 |
Display Resolution (Read) |
0.001 |
0.01 |
0.1 |
Pump Type |
Pressure/Suction |
Pressure/Suction |
Pressure |
Pump Speed |
Variable |
Variable |
One |
Process Connections |
1/4" (F) NPT |
1/4" (F) NPT |
1/2" O.D. Barbed Tubes |
External Temperature Control Capability |
Yes |
Yes |
N/A |
Flammability Class (DIN 12876-1) |
I (NFL) |
I (NFL) |
I (NFL) |
Over-Temperature Protection / Failsafe Heater Control |
Yes |
Yes |
Yes |
Low Liquid Level Protection |
Yes |
Yes |
Yes |
Cooling Coil |
Accessory |
Accessory |
Accessory |
Included Software |
PolyTemp, TDMS file, USB driver, Time/Temp Program Generator, PolyTemp Remote iPhone app |
PolyTemp Viewer, USB driver |
N/A |
Maximum Ambient Temperature °C |
35° |
35° |
35° |
Overall Dimensions (L x W x H) (inches) |
20.9 x 13.5 x 14.9 in |
20.9 x 13.5 x 14.9 in |
20.9 x 13.5 x 16 in |
Environmental Compliance |
RoHS, WEEE |
RoHS, WEEE |
RoHS, WEEE |
Shipping Weight (pounds) |
60 |
60 |
54 |
Maximum Pressure (psi) |
4.3 |
4.3 |
2.3 |
Maximum Pressure Flow Rate (l/min) |
20.1 |
20.1 |
13.5 |
Maximum Suction Flow Rate (l/min) |
14.7 |
14.7 |
N/A |
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 |
Heater Wattage |
1100 |
1100 |
1100 |
Electrical Requirements (VAC/Hz/Ph/A) |
120/60/1/10 |
120/60/1/10 |
120/60/1/10 |
Regulatory Approvals |
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 Liter Stainless Steel Open Bath Systems capable of this?
That depends on the controller used. Only the Advanced Programmable controller 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
4.7 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
Durable, fun, and good for aggressive chewers
Color: grass-green
I have bought this toy for my dog twice now, and the first time I purchased it, it quickly became his favorite. Unfortunately, I lost the first one when some other dogs took it down the street while we were playing outside. It was a bit heartbreaking to lose it, but after about two weeks, we managed to find the old one. However, it was in the middle of the street and had been run over several times, resulting in a broken squeaker. Despite its rough condition, it was clear how much my dog loved that toy. When I bought the new one, I was relieved to see that he doesn’t let it out of his sight at all. We have so much fun together, playing with it by throwing it in lakes, sandy areas, and engaging with other dogs. Even after all this rough play, the new toy is still intact. My dog particularly enjoys the squeaker feature, which adds to his excitement during playtime. He is an aggressive chewer, but this toy has proven to be more durable and has lasted us much longer than most of the other toys we've tried. It has definitely become a staple in our playtime routine!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 25, 2025
★★★★★ 5
Great product
Color: grass-green
This is my dogs' new favorite chew toy. They chew them all the time and have held up way better than most other chew toys.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
★★★★★ 1
Nope, not for Murphy the alligator hunter! 🐊🙄
Color: grass-green, Color: grass-green
Murphy, our 75 pound lab, loves to chew. We can’t give him anything soft or even anything remotely made for casual play as he chews them to pieces- literally. So when I saw this cute little alligator, with fairly good reviews, I bought it with high expectations. Nope. It didn’t have a chance- It’s in the garbage. ☹️
First I have to comment on the eyes. I don’t know what they are made of, but the “whites” of the eyes pealed off like paint within the first few minutes Murphy had it. He wasn’t even chewing at the eyes; they just pealed off. I can’t imagine that is good for dogs to ingest, but ok, I threw the white pieces away, and gave it back to him. I do have to say that he loved chewing on it- even without adding any kind of treat to it. So we watched him chew at it for about 30-40 minutes without it being dissected into a million different parts. I was impressed.... Until I took it away from him to be played with later.... during this time he was able to tear parts of the mouth (see pictures), and while all pieces are still in tact, I cannot imagine another 30 minutes of him having this in one piece. So, while I’m very aware that Murphy has limited toys to chew on, I will continue my search for indestructible toys for his chewing pleasure.
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Reviewed in the United States on April 9, 2021
★★★★★ 4
Cute toy maybe not for aggressive chewers
Color: grass-green
I bought this because I have an 3 1/2 yr old golden doodle. She tears every toy apart within half hour of having it. The only toys she hasn’t is Kong toys.
This is a cute toy. She was shredding pieces off the rubber with half hour of chewing it:(
I thought it was very similar to the material of Kong toys?
She loves chewing it and playing with it but I probably would not buy it for really aggressive large dogs who tear up toys.
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Reviewed in the United States on March 31, 2026
★★★★★ 5
Durable.
Color: grass-green
Very durable. My dog loves it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026