PolyScience Large Access Reservoir Refrigerated Bath, -30°C, 20L

Model # PP20R-30, PD20R-30, SD20R-30

Ultra high stability to ±0.005°C
Intuitive Smart-Touch™ touch-screen operation
USB, ethernet connectivity

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Our new, innovative baths from Polyscience are feature packed, compact, and remarkably responsive. A new friendly SmartTouch™ touch screen interface gives you step through convenience for easy setup of temperatures, functions and options. With temperature stability to ±0.005°C, you'll see that these new baths were engineered for high precision.

Here are just a few more bath features:

  • Large easy to read digital display can be viewed across the lab.
  • Patent-pending Swivel 180™ rotating controller lets you position the controller display to the optimal viewing angle.
  • Icon-driven user interface with onboard help lets you quickly navigate through bath setup and functions.
  • New LidLock™ lid stowing system stores the lid away conveniently while you perform your work without interfering with controller viewing or operation.
  • The precision molded DuraTop™ bath top resists chemicals and remains cool at high temperatures.
  • A new patent-pending WhisperCool™ energy-efficient heat removal system reduces noise levels while reducing overall energy consumption.
  • Access openings have been increased for more working area to get more work done in the same amount of time.
  • Simplified maintenance with easy front access to all maintenance components including washable air filter and front-mount drain to extend the life of your bath and keep it working at peak performance.

Choose From Three Bath Controllers (download the controller comparison chart)

Performance Programmable
Our top performer, the Performance Programmable Controller gives you access to all controller functions with temperature stability to ±0.005°C. Also included is a 10-point temperature calibration capability, 11 language display option, variable speed pump, and the only controller with unlimited program and step capability. Also included is a user enhanced display capability with 8 optional screen views, and a max temp of 200°C.

Performance Digital
Included with the Performance Digital Controller is stability to ±0.005°C, 11 language selection, 10-point calibration capability, max temp to 200°C, and variable speed pump. Designed for optimal performance, select this controller for high stability where programming ramps and steps is not a high priority.

Standard Digital
With just a few less options, choose the Standard Digital Controller with stability to ±0.04°C, 2-speed pump control, 1-point temperature calibration, English only language option, slightly smaller viewing LCD viewing area, and max temp to 170°C. Still a high performance bath at an economical price.

You won't find a more innovative bath for your process or calibration work. We use them in our calibration lab and recommend them to anyone performing routine calibrations of temperature devices.

Model: PP20R-30 PD20R-30 SD20R-30
Controller: Performance Programmable Performance Digital Standard Digital
Range: -30 to 200°C
(22° to 392 °F)
-30 to 170°C
(-22° to 338 °F)
Stability: ±0.005°C ±0.04°C
Reservoir Volume: 20 Liters
Bath Opening/Working Depth: 9.85x12.45x5.5"
25x31.6x14cm
Overall Dimensions: 24x16.6x26.9"
61x241.9x68.3cm
Cooling Capacity:  
Pump: Variable Speed 2 Speed
Enhanced Data Dsiplay:    
Time/Temp Program Steps:    
RS232 Output:  
USB A & USB B/Ethernet:    
Shipping Weight: 130lbs / 58.9kgs

Check out all the new innovative features in the introduction video.


Select the right contoller type for your application.
Click here to view comparison chart


Reference Thermometer

Monitor bath stability to ±0.05° with a NIST-Traceable Reference Thermometer


Don't forget the Bath Fluid
Choose the best fluid for your temperature range. We carry bath fluids that work from -100 to 550°C.

Reference Thermometer

Model: 222-555

  • Includes traceable calibration certificate with data at 5 temperatures
  • Perfect for checking the accuracy and calibration of other thermometers
  • Certified accuracy to ±0.05°C (±0.1°F)
We start with a high stability platinum RTD sensor rated at 1/10th the conformance limits of the DIN specification. The general purpose probe is attached to a high precision resistance thermometer that provides 0.01° resolution.

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Silicone Oil Calibration Fluid

Model: 5010/5012/5013/5014

  • Available in 1 liter, 1 gallon and 5 gallon quantities
  • 5010 Range: –40°C to 130°C
  • 5012 Range: -30 to 160°C
  • 5013 Range: 10 to 230°C
  • 5014 Range: 30 to 278°C
Select the best fluid for your application based on usable temperature range, viscosity and other factors. Click here for full details.

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PP20R-30 Performance Programmable Large Access Reservoir Refrigerated Bath - 20L
PD20R-30 Performance Digital Large Access Reservoir Refrigerated Bath - 20L
SD20R-30 Standard Digital Large Access Reservoir Refrigerated Bath - 20L

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