Refrigerated Circulator - Compact Lab Chiller - -20°C - 4.5 L Tank, 22 L/min

The Master Science Refrigerated Circulator is a small chiller that cools liquid from ambient temperature down to -20 °C and pumps it through condensers, reactors and other connected equipment. PID control keeps the temperature stable to ±0.3 °C.

It needs only about 50 × 23 × 50 cm of space, so it can stand on a bench, under it, or inside a fume hood. The refrigerant used is environmentally friendly and non-toxic.

Technical Specifications

Specifications of the Master Science Refrigerated Circulator:

• Brand: Master Science
• Model Number: MSRECL20-4.5SWISS
• SKU: MSRECL20-4.5SWISS
• Brand: Master Science
• Model Number: MSRECL20-4.5SWISS
• SKU: MSRECL20-4.5SWISS
• Temperature Range: -20 °C to ambient
• Temperature Display: LED, 0.1 °C resolution
• Temperature Stability: ±0.3 °C
• Refrigerating Capacity: 700 W
• Pump Pressure / Suction: 0.3 bar / 0.2 bar
• Maximum Pump Flow: 22 L/min
• Tank Volume: 4.5 L
• Cooling Water Tubing: Silicone, standard 8 mm insulated tube
• Communication: RS485 (optional)
• Low Level Alarm: Optional
• Heating Function: Optional
• Dimensions (W × D × H): 220 × 420 × 495 mm
• Operating Environment: 5 to 32 °C
• Power Supply: 220 V, 50 Hz

Key Benefits

• Saves bench space: the Master Science Refrigerated Circulator is only 220 mm wide.
• Steady temperature: PID control to ±0.3 °C.
• Low upkeep: maintenance-free pressure and suction pump.
• Adapts to the load: pump pressure and flow adjust automatically.
• Easy filling and draining: overflow and drain ports on the tank.

For a smaller 2.5 L unit with touch screen, see the Master Science low temperature circulator.

Product Features

Cooling

• 700 W refrigeration
• -20 °C to ambient
• PID control

Pump

• Pressure and suction pump
• Up to 22 L/min
• Automatic flow adjustment

Tank

• 4.5 L capacity
• Liquid level window
• Overflow and drain ports

Applications

The Master Science Refrigerated Circulator serves:

• Rotary evaporator condensers
• Jacketed glass reactors
• Distillation and extraction setups
• Cooling of analytical instruments
• Chemistry and pharmaceutical laboratories

Optional Accessories

• RS485 communication interface
• Low level alarm
• Heating function

Common Laboratory Problems and How This Circulator Helps

How the Master Science Refrigerated Circulator answers common cooling issues:

• Cramped fume hoods: compact body fits inside.
• Fluctuating condenser temperature: ±0.3 °C stability.
• Pump servicing: maintenance-free pump.
• Messy tank filling: overflow and drain ports.