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Water Baths > Circulating > Refrigerated

Thermo Scientific Lindberg/Blue M Refrigerated Circulating Bath

Part Number: RWB3220A-1

Model RWB3220A-1, Thermo Scientific Lindberg/Blue M Refrigerated Circulating Bath

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Part No.  



7 Gallons, 26.5 Liters

Temperature Range  

0°C to 100°C

Chamber Dimensions  

7.5" Deep, 12"W x 18"L

Ext Dimensions  

12.5"H x 28"W x 29"D


160 lbs

Heatup Time  

100 Minutes

Temp Uniformity  

±0.1°C at 37°C

Power Output  

2535 Watts


1 Year Parts and 90 Days Labor


120V 60Hz

Thermo Scientific advanced circulating water baths offer a combination of contemporary cabinet design and advanced microprocessor control.

High-strength cabinet construction with 304 stainless-steel interior tanks withstand the most critical applications in demanding laboratory environments. The refrigerated water bath is comprised of two independent units: a bath chamber and a refrigeration system module with identical dimensions.

Features of the RWB3220A-1 Water Bath

Microprocessor with RTD probe provides simple, accurate and repeatable temperature control while optimizing control parameters during operation

Digital temperature display, simultaneously reads setpoint and water temperature

Recessed control module protects against dirt and moisture

Single-stage, centrifugal pump with independent supply/return ports for maximum circulation

Reversible stainless-steel rack allows for optional reduction of working depth by 2in. (5cm)

Includes two 10ft. (8m) power cords with plugs; independent power cords for bath and refrigeration system (chiller). Two 5ft. hoses with worm gear clamps are included for connection of bath to chiller.

Certifications: UL, cUL

Lindberg Refrigerated Circulating Water Bath Brochure (PDF Download)

Adjustable High-Limit Control

Prevents critical process overtemperature conditions at any point over the bath operating range

Protects bath and its load

Interrupts heat and flashes visual warning

Automatically resets when temperature returns to normal

Fixed overtemperature safety, factory set 105°C, shuts off bath power; push-button manual reset


Integrated industrial-strength pump for internal circulation maintains precise temperature uniformity throughout the liquid medium

Rounded corners for better water circulation, improved uniformity and easier cleaning

With built-in drain with ON/OFF valve

Moisture-proof blanketed fiberglass insulation surrounding water chamber improves temperature stability and energy efficiency

304 stainless-steel construction resists chemicals, simplifies cleaning

Long-life heating elements for quick response to controller

Protective nonskid rubber feet protect the lab bench

Attractive front panel bezel for easy cleaning

Mounting clip for immersion glass thermometer (thermometer sold separately)

Refrigeration System

Allows accurate control at temperatures near or below ambient conditions

Quiet-running, hermetically sealed refrigeration system

High volume heat removal capacity rated at 3000 BTU/hr. at 27°C (nominal)

Ideal for use with 60%/40% ethylene glycol/water mixture to prevent icing at temperatures below 10°C

Independent ON/OFF switch—system can be switched OFF for operation above ambient temperatures

Optional Accessories


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All information current as of Friday, November 27, 2015