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Description
PolyScience 45 L Refrigerated & Heated Circulating BathsOverview Capable of reaching temperatures as low as 25C and as high as 135C, PolyScience 45 Liter Refrigerated Heated Circulating Baths provide dependable temperature control for a wide variety of laboratory cooling applications. Features Working temperatures as low as 25C and as high as +135C Temperature stabilities to 0. 005C (varies by controller) Controller options with large, intuitive displays and multiple communication options Large bath
Overview
Capable of reaching temperatures as low as -25°C and as high as 135°C, PolyScience 45 Liter Refrigerated/Heated Circulating Baths provide dependable temperature control for a wide variety of laboratory cooling applications.
Features
- Working temperatures as low as -25°C and as high as +135°C
- Temperature stabilities to ±0.005°C (varies by controller)
- Controller options with large, intuitive displays and multiple communication options
- Large bath openings and easy to clean surfaces
- Swivel 180™ Rotating Controllers
- LidDock™ self-stowing reservoir cover
- DuraTop™ insulating, chemical-resistant top deck
- WhisperCool™ Environmental Control System
- Cool Command™ modulated refrigeration system
- Reservoir drain
- Washable air filter
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 | 135°C | 135°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 -25° up to +135°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)
Advanced Digital Features
- Working Temperature: From -25° up to +135°C
- Temperature Stability: ±0.01°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
- 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, RS-232/RS-485, and external temperature probe
- On-screen prompts
- Automatic performance optimization and specific heat tuning
- Single-point calibration capability
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 | AD45R-20 | AP45R-20 |
| Description | -25, 45 L Ref. Circulator | -25, 45 L Ref. Circulator |
| Controller Type | Advanced Digital | Advanced Programmable |
| Display | 3.75" Touch-Pad LCD | 4.3" SmartTouch Touchscreen |
| Connectivity | Ethernet, USB A & B, RS232/addressable RS485, External Temperature Probe | Ethernet, USB A & B, RS232/addressable RS485, Remote On/Off, External Temperature Probe |
| Languages Supported | 4: French, German, Spanish, English | 11: French, German, Spanish, Chinese, Portuguese, Russian, Hindi, Arabic, Italian, Korean, English |
| Time/Temperature Programs & Steps | N/A | Open Mode: No restriction on the number of programs or steps |
| Swivel 180 Rotating Controller | Yes | Yes |
| Working Temperature Range °C | -25° to 135° | -25° to 135° |
| Temperature Stability °C | ±0.01° | ±0.005° |
| Fluid Optimization/Specific Heat Tuning | Automatic and/or user-adjustable | Automatic and/or user-adjustable |
| Temperature Calibration Capability | 1-point | 10-point |
| Working Access (L x W x D) (cm) | 54.9 x 39.8 x 14 cm | 54.9 x 39.8 x 14 cm |
| Pump Type | Pressure/Suction | Pressure/Suction |
| External Temperature Control Capability | Yes | Yes |
| Flammability Class (DIN 12876-1) | III (FL) | III (FL) |
|
Working Temperature Range °F |
-13° to 275° | -13° to 275° |
| Working Temperature Range °C | -25° to 135° | -25° to 135° |
| Nominal Cooling Capacity @ +20C (W) | 1400 | 1400 |
| Reservoir Capacity (gallons) | 11.88 | 11.88 |
| Reservoir Capacity (liters) | 45 | 45 |
| Reservoir/Tank Material | Stainless Steel | Stainless Steel |
| Reservoir Cover | Included | Included |
| DuraTop | Yes | Yes |
| Cleanable Air Filter | Yes | Yes |
| Working Access (L x W x D) (inches) | 21.6 x 15.68 x 5.5 in | 21.6 x 15.68 x 5.5 in |
| Working Access (L x W x D) (cm) | 54.9 x 39.8 x 14 cm | 54.9 x 39.8 x 14 cm |
| Temperature Stability °F | ±0.02° | ±0.02° |
| Temperature Stability °C | ±0.01° | ±0.005° |
| Display | 3.75" Touch-Pad LCD | 4.3" SmartTouch Touchscreen |
| Display Resolution (Set) | 0.01 | 0.01 |
| Display Resolution (Read) | 0.01 | 0.001 |
| Pump Type | Pressure/Suction | Pressure/Suction |
| Pump Speed | Variable | Variable |
| Process Connections | 1/4" (F) NPT | 1/4" (F) NPT |
| External Temperature Control Capability | Yes | Yes |
| Flammability Class (DIN 12876-1) | III (FL) | III (FL) |
| Over-Temperature Protection / Failsafe Heater Control | Yes | Yes |
| Low Liquid Level Protection | Yes | Yes |
| WhisperCool Environmental Control Technology | Yes | Yes |
| Cool Command Refrigeration Technology | Yes | Yes |
| Reservoir Drain | Yes | Yes |
| Included Software | PolyTemp Viewer, USB driver | PolyTemp Viewer, TDMS file viewer, USB driver, Time/Temperature Program Generator, PolyTemp Remote iPhone application |
| Maximum Ambient Temperature °F | 95° | 95° |
| Maximum Ambient Temperature °C | 35° | 35° |
| Overall Dimensions (L x W x H) (inches) | 35.8 x 22.4 x 42.1 in | 35.8 x 22.4 x 42.1 in |
| Overall Dimensions (L x W x H) (cm) | 90.9 x 56.8 x 107 cm | 90.9 x 56.8 x 107 cm |
| Refrigerant | R134a | R134a |
| Environmental Compliance | RoHS, WEEE | RoHS, WEEE |
| Shipping Weight (pounds) | 180 | 180 |
| Shipping Weight (kilograms) | 81.5 | 81.5 |
| Part Number | AD45R-20-A13D | AP45R-20-A13D |
| Maximum Pressure (psi) | 4.3 | 4.3 |
| Maximum Pressure (bar) | 0.3 | 0.3 |
| Maximum Pressure Flow Rate (gpm) | 5.3 | 5.3 |
| Maximum Pressure Flow Rate (l/min) | 20.1 | 20.1 |
| Maximum Suction Flow Rate (gpm) | 3.9 | 3.9 |
| Maximum Suction Flow Rate (l/min) | 14.7 | 14.7 |
| Cooling Capacity @ -20°C (W) | 250 | 250 |
| Cooling Capacity @ 0°C (W) | 800 | 800 |
| Cooling Capacity @ +20°C (W) | 1400 | 1400 |
| Cooling Capacity @ +100°C (W) | 1400 | 1400 |
| Included Hardware | Nylon hose adapters for 3/8", 1/4", and 3/16" | Nylon hose adapters for 3/8", 1/4", and 3/16" |
| Heater Wattage | 2200 | 2200 |
| Electrical Requirements (VAC/Hz/Ph/A) | 208-230/60/1/13 | 208-230/60/1/13 |
| Regulatory Approvals | ETL | 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 45 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.
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
4.1 ★★★★★
Based on 2030 reviews
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Product Reviews
★★★★★ 5
New Romantic Suspense Series in a Poly Community
Format: Kindle
I was very excited to start this series and it exceeded expectations. First, if you haven't read the prequel novella, you should! It sets up the premise of the series and the idea of this poly community in Alaska where they run vacation adventures. This story picks up after the community is established and there is threat. The prologue is chilling. I loved this so much. I really enjoyed the FMC. Her drive and passion for photography and wilderness and how she was overcoming her history. I especially appreciate stories that showcase emotional abuse and manipulation that is more understated and creeps up on you. The MMCs had the best bromance and though they had a shared backstory, they were distinct from each other and had complementary personalities. So much understanding and acceptance in the relationship as a whole. Its sweet and spicy. There are multiple dangerous situations and red herrings - the final sequence of the book I was on the edge of my proverbial seat. Ready for book two!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 5, 2025
★★★★★ 4
A mystery and a healing journey for 3 people
Format: Kindle
⭐⭐⭐⭐
🌶️🌶️🌶️
Touch her and 💀
🍑🍆🍑 MFM/Why choose
🤓Military MMCs
🥺Damaged hero
🤯BIG mystery to solve
🐶Lovable fur bestie
😈Forced proximity
My Thoughts 💭
I definitely feel the book is contemporary but there are some dark sides to it just because of their past and what they went through within the military as far as the guys.
I can say that I do love how Aiden and Miles are such good friends and how they stuck together and have helped each other.
Aiden is very goofy and free willing but has a lot of guilt and almost in a way self-conscious.
As were Miles gives off a dark and broody daddy vibe and Aspen ends up being the one to just unravel him.
I do love Aspen work and how she overcomes what she's been through and how she sees her growth and her self-worth and decides to put herself first.
This is a very much meat cute moment just because of the way they meet but then you have the backstory of like Miles and all of that...
I feel that the underlying plot of the mystery aspect really keeps you entangled into everyone else as of the side characters so I'm excited to see more of the series.
Spice is that a three just because I feel like there was so much more to their relationships and their interactions that the spice wasn't the forefront of it which was good because they needed to grow all three together and you need to see how they interacted separately and there was a lot of trauma healing in this book so it's understandable why the spice isn't the forefront.
I would say that if you're looking for something that is going to be sweet but yet pull at your heartstrings this will be the book.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2025
★★★★★ 3
Left with Questions
Format: Kindle
I'm hoping some things will be wrapped up in book 2 but with the epilogue for this book being a year later I'm currently just confused. Otherwise a very good read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 24, 2025
★★★★★ 5
Love, Love, Loved!!
Format: Kindle
This book was a wild and fun ride. It has suspense, it has found family and most importantly it had so much true love and friendship. I fell in love with Miles and Aiden instantly. The love and affection between these two friends was so profound and deep you just instantly wanted them to find their HEA. I absolutely loved how they supported one another through all their hurt and trauma. They have this unbreakable bond that is truthful and real. It’s simply beautiful how they hold up one another no matter what. When they meet Aspen not only does she fit into the town so perfectly, but she is able to appreciate each man for who they are instantly. She’s a great FMC in that she’s so kind, genuine and willing to trust again even when she’s been hurt by people in her past.
This book had a journey filled with so much love and healing that my heart cried several times. Each character was able to not only break through walls, but help one another grow into better versions of themselves. The love that flourishes when all three come together was electric and passionate. The spice was steamy and the romance was swoon worthy. The mystery throughout the book is one that isn’t completely solved in this story so I’m looking forward to the next book in the series and of course seeing more of Miles, Aiden and Aspen. 5 stars!
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Reviewed in the United States on June 20, 2025
★★★★★ 5
Miles, Aiden, and Aspen
Format: Kindle
Man this was a great start to a series. The author got you hooked one the book from chapter one. We are still don't have all the answers but they will come in due time. I absolutely enjoyed this story. Miles seriously has my heart. He was just such a lovable guy. He served his country and was injured doing his job. He carries around a lot of trauma and emotional damage from that time. His childhood best friend Aiden feels guilt over what happened to Miles. He blames himself even though it was not his fault. Due to his trauma they form an unlikely pairing. They need each other and to share the person they are with due to Miles's trauma. They met Aspen and form and instant connection. Little does Aspen know that she has helped Miles during some of the worst of his times with her beautiful pictures. She is running away from a relationship and a job that literally used her and tossed her away. She forms an instant connection to both guys and Miles's dog Jubie. She teaches them both to not only forgive their past but also love themselves more. She is everything they need in their life. Mean while there is a killer/stalker running around causing havoc. Will we find out who the bad guy is? I guess we will have to keep reading the series to find out. I really enjoyed this book and I think the author did a great job keeping your interest. I cannot wait to see what else she has instore. She had great world building and character development.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2025
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