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Description
PolyScience 28 Liter Integrated Heated BathsOverview PolyScience offers almost 50 different solutions for your laboratory's liquid heating needs from a simple immersion circulator to economical open bath systems to full featured circulating baths with ramp and soak capability. Typical applications include warming of reagents and culture media, thawing or tempering samples, biological incubation, cell culture, enzyme assays or controlling the temperature of laboratory equipment such as
Overview
PolyScience offers almost 50 different solutions for your laboratory's liquid heating needs - from a simple immersion circulator to economical open bath systems to full-featured circulating baths with ramp and soak capability. Typical applications include warming of reagents and culture media, thawing or tempering samples, biological incubation, cell culture, enzyme assays or controlling the temperature of laboratory equipment such as chromotography columns, viscometers and densitometers.
Feature
- Working temperatures from ambient +10° to +200°C
- Temperature stabilities to ±0.005°C
- Six controller types with large, intuitive displays and multiple communication options
- Large bath openings and easy to clean surfaces
- Swivel 180™ Rotating Controllers
- LidDock™ Lid Stowing System
- DuraTop™ Chemical Resistant Deck
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
- 6' (1.83m) standard grounded electrical cord
Controller Comparison
Specifications and features for the PolyScience Integrated Heated 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 |
Advanced |
Standard Digital |
Economy MX |
||
|
Temp. Range (°C) |
-30 to +200 |
-30 to +200 |
-30 to +170 |
-30 to +135 |
||
|
Cooling (@ 20°C) |
915 |
915 |
915 |
915 |
||
|
Heating |
1100 W |
1100 W |
1100 W |
1100 W |
||
|
Temp. Stability |
±0.005°C |
±0.01°C |
±0.04°C |
±0.07°C |
||
|
Display |
4.3" SmartTouch Touchscreen |
3.75" Touch-Pad LCD |
3.75" Touch-Pad LCD |
3.25" LCD |
||
|
Resolution Set/Read |
0.01/0.001 |
0.01/0.01 |
0.1/0.1 |
0.1/0.1 |
||
|
Programmability |
Open mode |
N/A |
N/A |
N/A |
||
|
Included Software |
PolyTemp, TDMS file, USB driver, Time/Temperature Program Generator, PolyTemp Remote iPhone application |
PolyTemp , USB driver |
N/A |
N/A |
||
|
Temperature Calibration Capapility |
10-point |
1-point |
1-point |
1-point |
||
|
Connectivity Options |
Ethernet, USB, RS232/address RS485, External Temperature Probe |
Ethernet, USB, RS232/address RS485, External Temperature Probe |
RS232 |
N/A |
||
|
External Temp. Control |
Yes (probe not included) |
Yes (probe not included) |
No |
No |
||
|
Pump |
Pressure/Suction, Variable-Speed |
Pressure/Suction, Variable-Speed |
Pressure only, 2-speed |
Pressure only, 1-speed |
||
|
External Circulation |
Open or closed loop |
Open or closed loop |
Closed loop |
Closed loop |
||
|
Max Pressure (psi) |
4.3 |
4.3 |
3.5 |
2.3 |
||
|
Max Flow Rate |
20.1 |
20.1 |
11 |
13.5 |
||
|
Hardware |
Nylon hose adapters for 3/8", 1/4", and 3/16" |
Nylon hose adapters for 3/8", 1/4", and 3/16" |
Nylon hose adapters for 3/8", 1/4", and 3/16" |
Fitting Kit |
||
|
Safety Rating* |
DIN 12876-1 Class III |
DIN 12876-1 Class III |
DIN 12876-1 Class I |
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.
AP Controller
Advanced Programmable Features
- Time/temperature programming (open mode)
- Intuitive 4.3” (10.9 cm) SmartTouch™ display
- 11 languages including: 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
- 10-point calibration capability
AD Controller
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
SD Controller
Standard Digital Features
- Large, universal icon and English display
- Swivel 180™ Rotating Controller
- On-board connectivity: RS232 serial output
- On-screen prompts
- Automatic performance optimization
- Single-point calibration capability
MX Controller
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
| Type | Stirred / Circulating Baths |
| Incubation | Yes |
| Refrigeration | Yes |
| Temp Range (°C) | Ambient+10 to 200 |
| Capacity (L) | 7 to 28 |
| Circulation | Internal & External |
| Brand | PolyScience |
| MaxFlow Rate (l/min) | 20.1, 13.5, 11 |
| Temp Stability (°C) | ±0.005, ±0.01, ±0.04 |
| 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) | 82 |
| Width (in) | 26.5 |
| Depth (in) | 18 |
| Height (in) | 16.6 |
Manufacturer specifications
Controller |
Advanced Programmable |
Advanced Digital |
Standard Digital |
Part Number |
AP28H200-A11B |
AD28H200-A11B |
SD28H170-A11B |
Temperature Range °C |
Ambient +10° to 200° |
Ambient +10° to 200° |
Ambient +10° to 170° |
Reservoir Capacity (liters) |
28 |
28 |
28 |
Reservoir/Tank Material |
Stainless Steel |
Stainless Steel |
Stainless Steel |
Reservoir Cover |
Included |
Included |
Included |
DuraTop |
Yes |
Yes |
Yes |
LidDock |
Yes |
Yes |
Yes |
Working Access
|
12.35 x 14.13 x 5.5 in |
12.35 x 14.13 x 5.5 in |
12.35 x 14.13 x 5.5 in |
Temperature Stability °C |
±0.01° |
±0.01° |
±0.04° |
Display |
4.3" SmartTouch Touchscreen |
3.75" Touch-Pad LCD |
3.75" Touch-Pad 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 |
Two |
Process Connections |
1/4" (F) NPT |
1/4" (F) NPT |
1/4" (F) NPT |
External Temperature Control Capability |
Yes |
Yes |
N/A |
Flammability Class
|
III (FL) |
III (FL) |
I (NFL) |
Over-Temperature Protection / Failsafe Heater Control |
Yes |
Yes |
Yes |
Low Liquid Level Protection |
Yes |
Yes |
Yes |
Reservoir Drain |
Yes |
Yes |
Yes |
Cooling Coil |
Yes |
Yes |
Yes |
Included Software |
PolyTemp, TDMS file, USB driver, Time/Temp Program Generator, PolyTemp Remote iPhone app |
PolyTemp, USB driver |
N/A |
Max Ambient Temperature °C |
35° |
35° |
35° |
Overall Dimensions
|
26.5 x 18 x 16.6 in |
26.5 x 18 x 16.6 in |
26.5 x 18 x 16.6 in |
Environmental Compliance |
RoHS, WEEE |
RoHS, WEEE |
RoHS, WEEE |
Shipping Weight (pounds) |
82 |
82 |
82 |
Max Pressure Flow Rate (l/min) |
20.1 |
20.1 |
11 |
Max 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" |
Nylon hose adapters for 3/8", 1/4", and 3/16" |
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 28 Liter Integrated Heated 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 291 reviews
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Product Reviews
★★★★★ 5
Asurion is AWESOME!
Ok, so let me start with the fact that you should NOT waste your time calling Amazon's customer service if you think you have a claim under Asurion's monthly protection plan. CALL ASURION!
I wasted almost an hour with Amazon representatives that have absolutely no training in how the Asurion plan works, or even any idea if my item was covered. In fact, they told me the mechanized chair I purchased under the plan wasn't covered!
Finally, my call got escalated to a manager who was just as clueless about my coverage, but had the best idea ever... call Asurion!
The smartest thing I did that morning was hang up with Amazon, and reach out to Asurion as I should have done in the first place.
Dealing with Asurion's customer service, after my Amazon call, was like being elevated to VIP status! 😄
Asurion's rep nicely took all my info, including the chair's purchase date and order number. Then they asked that I upload a couple of pictures of the product, along with a written description of the malfunction I had mentioned over the phone.
This is where it gets really good. They told me they'd review the claim to determine if they'd send a repair
specialist or reimburse me the cost of the item. In less than 48 hours, they determined that a payout was in order, and sent me an email that included an Amazon gift card for the total cost of the item minus the taxes I had paid, which I loaded directly into my Amazon wallet. Apparently, Asurion does not include the purchase taxes in their coverage.
But, I can live with that.
All in all, Asurion's claims division get a double thumbs up 👍🏽👍🏽, and the company gets big ups from me for not only standing behind their protection plan, but doing so expeditiously!
Special note: If you buy a lot of stuff from Amazon, and have Asurion's monthly protection plan, scroll the item listing before pulling the trigger on your purchase... you need to see the green streamer that indicates your product is protected by the plan. If you don't see that, check to see if there are alternative products that might be covered. There are very few electronic or high ticket items that aren't covered, but looking for that green banner in the item description that says it's covered is key to foregoing any future headaches.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
★★★★★ 5
Glad to have Asurion Protection Plan!!! So easy to file a claim and get refunded!!!
I bought my ongoing protection plan about six months ago and had not used it for anything. About the same time, I purchased a small fountain for our front porch. A few weeks ago, the pump stopped working and I did everything I could think of to fix the pump, first check to see if the electrical outlet it had been plugged into still worked and it did. I then poured out all the water, added fresh water, then opened the pump to wash it out and remove any debris it had inside. There was none, and of course by now, the manufacturer's return date ended about four months ago. I was very nervous to submit a claim -- I was afraid I would get rejected, that I would have to pack up and return, or that I would be given 20 questions or more and provide mountains of paperwork to submit the claim. But it was surprisingly simple and easy, the person from Asurion was friendly and did her job incredibly well, my claim was created in their system in less than five minutes and I received a total refund minus the tax (turns out online retailer is not allowed to refund the tax because it was already paid to local and state governments. The cost of the fountain minus the tax was still about $165, which allowed me to upgrade to a much better water pump that had a higher output and also has something called "Burn Protection," ie overheating if the water level gets too low or if the pump gets plugged with debris. The total cost of the new pump was about $25 and has all kinds of amazing features as compared to the small fountain that didn't even have burn protection. I installed the new pump and it's working far better than the one that came with the fountain. Bottom line: I am so glad that I purchased the monthly protection plan from Asurion, and told my family how please I had it. They previously told me it was a waste of money and time because they wouldn't honor the claim. but they did, and I am so elated!
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Reviewed in the United States on February 13, 2026
★★★★★ 5
Stress and worry free with asurions complete protect plan
Absolutely thrilled with asurions complete protect plan. Worth every penny. My son is on the spectrum, and is very rough with devices, and I myself, am clumsy and go through devices more than the average person. Asurions comply protect plan, holds true and does exactly as promised. It feels so good to know, that next time a device breaks, I don't have to worry and stress over affording a replacement. Claims take literally 5 minutes to file, and I've not yet had an issue with anything not being covered. The only problem I ever had, was initially finding out how to contact them and file a claim. Which is simple. Don't contact Amazon, go to asurions direct website and follow the prompts. I highly recommend asurions complete protect plan, if you like removing stress from your life, and feeling a bit of security.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
★★★★★ 1
Worst company I’ve ever dealt with
This is probably the strongest version to use publicly because it stays factual, detailed, and angry without sounding unhinged. That’s what usually hits hardest with companies like Asurion because it reads like a documented timeline instead of just rage.
I have never dealt with a more disorganized and concerning claims process in my life than what I experienced with Asurion regarding my DJI Mavic Mini Pro 5 drone claim.
This entire nightmare started before the claim was even filed. For over TWO DAYS, multiple Asurion representatives insisted my product “wasn’t registered” and refused to process my claim. Meanwhile, Asurion’s own phone system literally states: “Great news, you no longer have to register your products.” Their own employees did not understand how their own system worked. I was transferred endlessly between departments, hung up on repeatedly, and even sent to Amazon support despite Amazon having nothing to do with the issue. It finally took speaking to a supervisor on the THIRD DAY for someone to admit they were wrong and manually file the claim.
I mailed my drone on May 4th regarding a serious GPS/compass issue where the drone would unexpectedly drift or take off on its own while recording. Considering this is a nearly $2,000 flying device, this was obviously a major safety concern.
Then things somehow got worse.
On May 5th — less than 24 hours after receiving the drone — I got an email saying it had already shipped back to me. No repair details. No explanation. Nothing.
When I called asking what repairs were actually performed, supervisor “CES” told me there were “no notes” explaining what had been done. She promised she would investigate personally and call me back within 24 hours.
She never called back.
On May 8th, after following up myself, another supervisor finally stated that the technician had “soldered/re-soldered” something on the drone. No explanation of WHAT was soldered. No detailed repair notes. No documentation. Nothing.
This is a drone that had ZERO physical damage and had NEVER been crashed.
I asked for written documentation of the repairs and was refused. I was told to “check the portal,” even though the portal contained absolutely no repair information whatsoever. Another supervisor apologized and promised to email me detailed information immediately.
That never happened either.
At this point, multiple supervisors had promised callbacks, documentation, and escalation reviews — and not a single one followed through.
The drone arrived back while I was still on the phone with Asurion. I powered it on and immediately received compass calibration errors. The drone would not properly calibrate.
So after all this, the drone STILL had issues.
Instead of taking accountability, supervisor “Ryan” accused me of “chasing a reimbursement check,” which is insane considering Asurion themselves only offer two resolutions: repair or reimbursement. He repeatedly insisted that because I “received a service,” the issue was basically over. He refused to acknowledge my concerns regarding undocumented soldering repairs on a nearly $2,000 aircraft and ultimately hung up on me.
Since then, the situation has only become more absurd.
Some supervisors told me the situation was unacceptable and assured me I would likely be reimbursed if I mailed the drone back. Others told me they needed more photos, receipts, and serial numbers — despite the fact that all of this had already been submitted previously and somehow “disappeared” from their system.
One representative demanded photos of a serial number physically located on the drone itself. I explained that DJI stores the serial information digitally through the controller/settings, something Asurion should absolutely know if they repair DJI drones professionally.
That representative then refused to help me further and hung up.
Days later, another representative suddenly approved a return shipping label anyway, making all the previous arguments and delays completely pointless.
Now, after weeks of this chaos, I’ve been told by another supervisor not to even send the drone back yet because they “aren’t sure what they’re going to do.” I was explicitly told they may not repair it and may not reimburse it either.
So to summarize:
* Asurion employees didn’t understand their own registration system.
* I was repeatedly hung up on and transferred around.
* Multiple supervisors promised callbacks and never followed through.
* My nearly $2,000 drone was “repaired” in under 24 hours with vague undocumented soldering work.
* Nobody can tell me exactly what was repaired.
* The drone still had calibration issues immediately after return.
* Supervisors contradicted each other constantly.
* Previously submitted documents mysteriously disappeared.
* I was accused of “chasing a check” for wanting accountability regarding a failed repair.
* I still don’t know whether they plan to repair, reimburse, or do nothing.
This has been one of the most frustrating, unprofessional, and concerning customer service experiences I have ever dealt with.
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Reviewed in the United States on January 13, 2026
★★★★★ 5
Excellent Support
Very easy to contact a real person and get solutions extremely quickly.
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Reviewed in the United States on May 12, 2026