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Description
75 L Refrigerated & Heated Circulating BathsOverview Capable of reaching temperatures as low as 20C, PolyScience Refrigerated Heated Circulating Baths provide dependable temperature control for a wide variety of laboratory cooling applications. Features OpenMode 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
Overview
Capable of reaching temperatures as low as -20°C, PolyScience Refrigerated/Heated Circulating Baths provide dependable temperature control for a wide variety of laboratory cooling applications.
Features
- OpenMode 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, RS232/485, 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)
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) |
|---|---|---|
| Maximum Temperature | 200°C | 200°C |
| Temperature Stability | ±0.005°C | ±0.01°C |
| Pump Type | Pressure/Suction, Variable-Speed | Pressure/Suction, Variable-Speed |
| Programmability | OpenMode - unlimited programs and steps | 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 |
*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)
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 -25 to 135 |
|
Capacity (L) |
45 |
| Circulation | Internal & External |
|
Brand |
PolyScience |
|
MaxFlow Rate (l/min) |
20.1, 11 |
|
Temp Stability (°C) |
±0.005, ±0.01 |
|
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) |
180 |
|
Width (in) |
35.8 |
|
Depth (in) |
22.4 |
|
Height (in) |
42.1 |
Manufacturer specifications
| Model | AP75R-20 |
| Description | 75 L, Ref. Circulator |
| Controller Type | Advanced Programmable |
| Display | 4.3" SmartTouch Touchscreen |
| Connectivity | Ethernet, USB A & B, RS232/addressable RS485, Remote On/Off, External Temperature Probe |
| Languages Supported | 11: French, German, Spanish, Chinese, Portuguese, Russian, Hindi, Arabic, Italian, Korean, English |
| Time/Temperature Programs & Steps | Open Mode: No restriction on the number of programs or steps |
| Swivel 180 Rotating Controller | Yes |
| Working Temperature Range °C | -20° to 100° |
| Temperature Stability °C | ±0.005° |
| Fluid Optimization/Specific Heat Tuning | Automatic and/or user-adjustable |
| Temperature Calibration Capability | 10-point |
| Working Access (L x W x D) (cm) | 54.9 x 39.8 x 23.9 cm |
| Pump Type | Pressure/Suction |
| External Temperature Control Capability | N/A |
| Flammability Class (DIN 12876-1) | III (FL) |
|
Working Temperature Range °F |
-4° to 212° |
| Working Temperature Range °C | -20° to 100° |
| Nominal Cooling Capacity @ +20C (W) | 1400 |
| Reservoir Capacity (gallons) | 19.81 |
| Reservoir Capacity (liters) | 75 |
| Reservoir/Tank Material | Stainless Steel |
| Reservoir Cover | Included |
| DuraTop | Yes |
| Cleanable Air Filter | Yes |
| Working Access (L x W x D) (inches) | 21.6 x 15.7 x 9.4 in |
| Working Access (L x W x D) (cm) | 54.9 x 39.8 x 23.9 cm |
| Temperature Stability °F | ±0.01° |
| Temperature Stability °C | ±0.005° |
| Display | 4.3" SmartTouch Touchscreen |
| Display Resolution (Set) | 0.01 |
| Display Resolution (Read) | 0.001 |
| Pump Type | Pressure/Suction |
| Pump Speed | Variable |
| Process Connections | 1/4" (F) NPT |
| External Temperature Control Capability | N/A |
| Flammability Class (DIN 12876-1) | III (FL) |
| Over-Temperature Protection / Failsafe Heater Control | Yes |
| Low Liquid Level Protection | Yes |
| WhisperCool Environmental Control Technology | Yes |
| Cool Command Refrigeration Technology | Yes |
| Reservoir Drain | Yes |
| Included Software | PolyTemp Viewer, TDMS file viewer, USB driver, PolyScience LabVIEW Virtual Instrument & Functions, Time/Temperature Program Generator, PolyTemp Remote iPhone application |
| Maximum Ambient Temperature °F | 95° |
| Maximum Ambient Temperature °C | 35° |
| Overall Dimensions (L x W x H) (inches) | 35.8 x 22.4 x 42.1 in |
| Overall Dimensions (L x W x H) (cm) | 90.9 x 56.9 x 107 cm |
| Refrigerant | N/A |
| Environmental Compliance | RoHS, WEEE |
| Shipping Weight (pounds) | 200 |
| Shipping Weight (kilograms) | 90.6 |
| Part Number | AP75R-20-A13D |
| Maximum Pressure (psi) | 4.3 |
| Maximum Pressure (bar) | 0.3 |
| Maximum Pressure Flow Rate (gpm) | 5.3 |
| Maximum Pressure Flow Rate (l/min) | 20.1 |
| Maximum Suction Flow Rate (gpm) | 3.9 |
| Maximum Suction Flow Rate (l/min) | 14.7 |
| Cooling Capacity @ -20°C (W) | 250 |
| Cooling Capacity @ 0°C (W) | 800 |
| Cooling Capacity @ +20°C (W) | 1400 |
| Cooling Capacity @ +100°C (W) | 1400 |
| Included Hardware | PT100 temperature probe, USB drive, stainless steel hose adapters for 3/8", 1/4", and 3/16" |
| Heater Wattage | N/A |
| Electrical Requirements (VAC/Hz/Ph/A) | 208-240/50/60/1/13 |
| Regulatory Approvals | ETL |
FAQ
What materials of the circulating bath come into contact with the bath liquid?
The wetted parts of the instrument are all 300 series stainless steel.
I would like to perform a heating / cooling program where the temperature ramps from one set point to another over time. Are the PolyScience 75 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.
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
★★★★★ 2
It was too good to be true
Color: Tan
I spoke too soon. Like with every Timex, this one was faulty, too. When the seconds hand reaches the 12 o'clock position (indicating the start of a new minute), the minutes hand should align precisely with a minute marker. That's how it should be. However, in the case of this particular watch, the minutes hand consistently lags behind, meaning it does not align correctly with the minute marker when the seconds hand hits the 12. No matter how precisely I align the minute hand when resetting the time, the minute hand eventually misaligns.
Timex, I give up.
ORIGINAL REVIEW: "Wow. After receiving 3 faulty, shoddily built Timex watches in a row, color me impressed. This looks good, feels good, and operates well. This is a great cheap alternative to the Khaki Field watch, IMO. The case is made of steel, not brass like many Timex watches. The glass is mineral, but here's something many watch enthusiasts don't tell you—mineral glass is more impact-resistant than sapphire crystal. Since you want a field watch to have more impact-resistant features, I'm okay with mineral glass. And here's the final bonus... the second hand actually hits all the markers. This may not be your experience, but with the one I got, it's hitting the marks perfectly.
A lot of collectors obsess over specifications way too much. For me, as long as the watch functions properly, aesthetics and design are most important. And this watch has it. In person, this watch just looks really, really good. And for the price I got it at, it checks off the spec sheet too.
Now, let's see how it holds up over time."
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Reviewed in the United States on June 24, 2024
★★★★★ 5
Thumbs up
Color: Tan
Great watch for the $$$. Classy looking too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 22, 2025
★★★★★ 2
Too small
Color: Tan
I have small wrists and this was too small even for me. It also seems a bit cheap compared to my other Timex and Casio.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2024
★★★★★ 5
A Clean, Modern Dress Shirt That Instantly Upgrades Your Style
The J.VER Men’s Banded Collar Dress Shirt is one of those rare finds that looks and feels far more expensive than it is. From the moment you take it out of the packaging, the quality of the fabric and the precision of the stitching stand out. The material has a smooth, refined hand to it—lightweight but substantial enough to hold its shape, with a clean drape that gives the shirt a polished, tailored appearance.
The mandarin collar is the real star. It adds a modern, confident look without feeling flashy, and the cut works equally well under a blazer or on its own. Fit-wise, the shirt strikes an ideal balance. It contours the torso without being restrictive, offering room in the shoulders and sleeves while maintaining a streamlined silhouette. The stitching is tight and consistent, and the seams lie flat—details usually seen on shirts costing several times more.
In daily wear, the fabric holds up well. It resists wrinkling better than expected and maintains its structure throughout a full day of movement. The one drawback is that to keep it looking crisp and new, dry cleaning is recommended. It’s not mandatory, but it does help maintain the shirt’s sharpness and color over the long term.
This shirt shines in versatility. It works for business settings, evening events, casual dinners, and even travel—especially for anyone who prefers a clean, minimal look over a traditional collar. Compared to designer mandarin-collar shirts, which can easily run triple the price, the J.VER version delivers similar style and quality without the premium cost.
Pros
• High-quality fabric with a smooth, tailored drape
• Modern mandarin collar elevates the look
• Excellent stitching and construction
• Versatile for work, events, and casual wear
• Exceptional value compared to high-end brands
Cons
• Dry cleaning keeps it looking its best
If you want a shirt that looks sharp, fits well, and offers a modern style at a price that feels like a steal, the J.VER Banded Collar Dress Shirt is an excellent choice that consistently outperforms expectations.
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Reviewed in the United States on November 23, 2025
★★★★★ 5
Fabric is wonderful - and so's everything else!
Size: Medium, Color: White
First off - amazing fabric. It's really flexible and - well, expands as needed - with a really great feel to it. Light fabric, which is just perfect; I'm the conductor of a symphony orchestra, and often like to wear this in white or black with a mandarin-collar jacket. Look is great, comfort is terrific. The sizing is spot-on and I hesitate to say that the price is ALSO excellent...just in case they see my review and conclude that they're charging too little for a really great shirt! Currently, I've purchased two each in white and black for professional use, but will probably get a few more in other colors for casual wear. A-OK!
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Reviewed in the United States on September 26, 2025