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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
4.2 ★★★★★
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Product Reviews
★★★★★ 4
good price for good product. applies well, shake and store upright
Style: SPF 50, Size: 8 Fl Oz (Pack of 1), Style: SPF 50, Size: 8 Fl Oz (Pack of 1)
I believe it is equal to the name brands
It is 50 SPF Sun Protection Factor so it offers strong UV A and UV B protection which are the 2 ranges of sun rays that do the skin damage and burning.
It is an easily absorbed lotion that when rubbed goes into the skin and is not visible. It is thick and goes on with a non shiny, non greasy, solid thick feeling which is what we need for it to stay on as long as possible.
It feels good after being rubbed in in that it feels dry and not overly greasy or with no shine and sheen.
It is a good product and offers burn protection to me in some clear-sky strong sun uses.
Reapply after entering the pool water or swimming laps and after an hour (all sunscreen labels say reapply after 80 minutes which I believe is per recommendations of the federal FDA or some medical studies).
I reapply often and I still get tanned but I do not want to burn.
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Reviewed in the United States on August 9, 2025
★★★★★ 5
Survived the sun like a pasty legend
Style: SPF 50, Size: 8 Fl Oz (Pack of 1)
I bought this sunscreen because I’m basically a human marshmallow — one hour in the sun and I’m toasted. This Amazon Basics Sport SPF 50? It’s like armor for the pale and easily crisped. I slathered it on before a full day of hiking, sweating, and pretending I enjoy direct sunlight, and guess what? No burn. Not even a pink glow. Just victory.
It goes on smooth, doesn’t feel greasy, and somehow stayed put through sweat, water, and my dog licking my arm. It’s fragrance-free, which means I didn’t smell like a coconut smoothie or a chemical spill — just clean and protected.
Pros:
• High SPF that actually works
• Sweat and water resistant — like, impressively so
• No greasy residue or weird smell
• Affordable and comes in a big ol’ bottle
• Didn’t turn me into a lobster (the bar is low, but still)
Minor feedback:
It’s not fancy or trendy, but honestly, I’m here to not burn — not win a skincare award. Also, it takes a bit of rubbing in, but once it’s on, it’s locked and loaded.
Final thoughts:
If you want solid sun protection without the drama, this stuff delivers. Whether you’re hiking, swimming, or just trying to survive summer, it’s a reliable sidekick. Would absolutely buy again — my skin demands it.
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Reviewed in the United States on November 7, 2025
★★★★★ 5
Great Sunscreen at a Great Price!
Style: SPF 50, Size: 8 Fl Oz (Pack of 1)
Love this sunscreen. I live in FL and like to walk most mornings, and need a good sunblock. This Amazon Basics is far better than my previous, far more expensive brand. It's a great price for great quality. I've been using it on my body & face, it's non-greasy, absorbs well, and really seems to offer very good sun protection. And I really appreciate the next day shipping on my past two orders, Amazon. Thanks for the great product & great service!
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Works when working outside and heavy activities
Style: SPF 50, Size: 8 Fl Oz (Pack of 1)
I use it as an Amazon delivery driver, and it works in the heat and sweat is no issue it does last for 2 hours. Reapplying it is extremely easy, no burns or sun damage to my skin. I can tell you it works cause I’m recovering from skin cancer and it works no problems or anything.
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Reviewed in the United States on May 19, 2026
★★★★★ 3
Just ok - too thick to apply evenly
Style: SPF 50, Size: 8 Fl Oz (Pack of 1)
Just ok - very thick, so difficult to apply evenly. I use this for outdoor cycling and it works, but it's so thick that it tends to clump instead of smoothly covering the skin.
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Reviewed in the United States on April 16, 2026