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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
4.3 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Spacious, versatile canvas crossbody that hits the sweet spot between purse and messenger bag
I needed something larger than my usual purse but smaller than a messenger bag for days when I need to carry more without going too bulky. This fills that gap perfectly. It could even work as an overnight bag if you travel light.
The main compartment is spacious with two interior compartments layered inside it. One is open pocket style and one has a zipper. There are also two open pockets on the outside. The shoulder strap adjusts easily and should work for most people. The zipper pulls have rectangular holes I can clip keys to, and I added a small clip to the main zipper to secure it to the strap hardware.
The canvas texture means it isn't wipe-clean, but it should wash easily which matters to me. One unexpected and welcome detail: the desiccant pack inside was scented and made the whole bag smell great right from the start, rather than the usual chemical or dye smell new bags often have.
✅ Highlights
• Hits the sweet spot between purse and messenger bag in size
• Interior with multiple compartments
• Zipper pulls have holes for clipping keys or a security clip
• Adjustable strap works for most body types
• Scented desiccant pack means no unpleasant new-bag smell
❌ Cons
• Main zipper requires two hands to close when fully open
• Canvas texture means not wipe-clean
This is a well-thought-out but simple bag that works exactly as described. The minor zipper quirk aside, it does everything I needed it to do.
-Review of GEMIU "GEMIU Canvas Hobo Crossbody Bag for Women Casual Tote Shoulder Bag Large Messenger Bag for Travel"
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
★★★★★ 5
A Nice Size Versatile Tote/Bag/Purse
This GEMIU Canvas Hobo Crossbody Bag for Women Casual Tote Shoulder Bag Large Messenger Bag for Travel is a nice versatile tote that can be used as a purse, a work bag, or a travel bag. It is light-weight, made of a medium thick canvas, and can fit a laptop or iPad as well as other items, although it doesn't have the protective cushion for electronics. There are two deep pockets on one outer side, and the other outer side doesn't have pockets, but you can see the stitching from the inner pockets. Inside the bag, there are two pockets on one side; one is zipped and it sits on top of the second open pocket. The main compartment zipper goes beyond the bag so it allows the mouth of the bag to be opened all the way. But with this type of zipper, there is a small opening that remains at the end. The straps are easily adjustable to allow wear as a purse or crossbody. I typically like having smaller purses so I don't have to carry heavy things, but when I go on vacation or visit out of town, it's nice to have a bigger bag to carry things I don't normally carry in my purse (e.g., power bank, umbrella, water bottle, etc.). I can fit my smaller purse into this tote and carry some additional items in it - it's the best of both worlds. The bag does have a slight smell when I first took it out of the plastic package, but it dissipated over time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2026
★★★★★ 1
Smells terrible
Color: Army Green
I bought this in green. Love the bag and the color. But the smell!! It is horrible.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
★★★★★ 5
Good hobo bag
Color: Grey
I love a good hobo bag for its laid-back style and functionality. It’s spacious without feeling bulky, and the slouchy design gives it that effortless, everyday vibe. There was no odor,material is a good thickness, not sure on durability since I just started to use it. The bag was bigger than I expected.
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Reviewed in the United States on April 22, 2026
★★★★★ 2
Strong stinky odor
Color: Army Green
I cannot share the stink of the purse. It fills small rooms with its odor. The bag is okay, but needs to be washed….
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
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