• Midicool™ Series

    Precision Cooling for Medium-Scale Labs.

    Compact. Quiet. Efficient — Engineered for high-performance lab and medical applications.


  • MidiCool™

    Precision Cooling for Medium-Scale Labs

    MiniCool recirculating chiller for laboratory cooling, rotary evaporator temperature control system

    Engineered for medium-scale labs and pilot projects, MidiCool delivers stable, energy-saving cooling for rotary evaporators, bioreactors, and advanced lab equipment.

    • Cooling Capacity: 1.3 ~ 4.6KW
    • Temperature Range: -20°C to -40°C
    • Precision Control: ±0.1°C Stability
    • Refrigerant: R404A / R290
    • Power Supply: AC 120V~240V
    • System Type: Closed-loop liquid cooling

    Built for High-Precision Industries:

    • Bioreactors
    • Material Testing
    • Chemical Synthesis
    • Rotary Evaporation
    • Ultrasonic Processing
    • High-Speed Dispersion
    • Analytical Instruments

    MidiCool™ Models


    The MidiCool medium-sized low-temperature chiller is engineered for demanding laboratory and pilot-scale applications, delivering stable, precise, and efficient temperature control. Leveraging advanced compression refrigeration technology and intelligent temperature management, MidiCool ensures optimal performance for chemical engineering, biopharmaceuticals, and material science research.

    Designed to meet the stringent requirements of rotary evaporators, large-scale bioreactors, and other specialized equipment, MidiCool provides a reliable cooling and constant-temperature solution. Its optimized refrigeration system and energy-saving design ensure efficient operation, while the compact, intelligently structured chassis allows flexible placement on lab benches or beside equipment without occupying excessive space.

    The MidiCool series is ideal for:

    • Material performance testing
    • Fermentation tank temperature adjustment
    • Temperature control in chemical synthesis reactions
    • Cooling for rotary evaporators, ultrasonic pulverizers, biological reactors, high-speed dispersers, and electron microscopes

    With low operating noise, high reliability, and cost-effective operation, MidiCool accelerates research and production while providing eco-friendly, energy-efficient cooling. Its compact design makes it perfect for labs requiring desktop or fume hood placement, and its fast ROI makes it a smart investment for medium-scale experimental setups.

    MidiCool – precision, efficiency, and reliability in one compact solution.


  • MidiCool Series Compact Liquid Chiller
    MiniCool™ Series

    MiniCool™ Series

    $1,500.00 - $1,700.00
    The MiniCool™ Series delivers high-performance liquid cooling in a compact, quiet, and energy-efficient design. Ideal for laboratories, medical devices, and precision industrial systems.

    1- Cooling Capacity: 450W ~ 1kW+
    2- Temperature Range: 0°C to -40°C
    3- Precision Control: ±0.1°C Stability
    4- Refrigerant: R134a / R290 / R1234yf
    5- Power Supply: AC (120V~240V) / DC
    6- System Type: Closed-loop recirculating liquid cooling

    Built for High-Precision Industries:
    1- Laser Systems
    2- Electronics Cooling
    3- Medical & Diagnostic Equipment
    4- Laboratory & Analytical Instruments
    5- Semiconductor Testing Equipment
    View more details...
    Select
    Quantity
    Coming soon
    MidiCool™ Series

    MidiCool™ Series

    $2,200.00 - $3,600.00
    The MiDiCool™ Series delivers high-performance liquid cooling in a compact, quiet, and energy-efficient design. Ideal for laboratories, medical devices, and precision industrial systems.

    1- Cooling Capacity: 1300W ~ 4.6kW
    2- Temperature Range: 0°C to -40°C
    3- Precision Control: ±0.1°C Stability
    4- Refrigerant: R290 / R404A
    5- Power Supply: AC 120V~240V
    6- System Type: Closed-loop recirculating liquid cooling

    Built for High-Precision Industries:
    1- Laser Systems
    2- Electronics Cooling
    3- Medical & Diagnostic Equipment
    4- Laboratory & Analytical Instruments
    5- Semiconductor Testing Equipment
    View more details...
    Select
    Quantity
    Coming soon
  • Countertop Recirculating Cooler | MidiCool™

    Laboratory Water Chiller

    minicool-recirculating-chiller-lab-cooling-system.png

    MidiCool: Precision Cooling for Medium-Scale Labs.

    The MidiCool™ is one compact, high-performance recirculating chiller engineered for modern laboratories.

    Delivers precise temperature control, energy-efficient cooling, and ultra-quiet operation. Features a maintenance-free pump, flexible modes, and remote connectivity, ensuring reliable, continuous cooling for lab equipment and scientific applications.

    RIGID minicool-recirculating-chiller-lab-cooling-system.png

    Key Features

    • LED display with 0.1°C resolution
    • Benchtop design for space-saving installation
    • Efficiency rear condenser for improved performance
    • Stainless steel reservoir to prevent contamination
    • Quick-connect interface for easy tubing installation
    • Advanced PID temp control for superior stability
    • Built-in multi-protection for safe, reliable operation
    • CFC-free refrigerant for environmentally friendly performance
    minicool-recirculating-chiller-laboratory-cooling-system.png

    Typical Applications

    MidiCool™ recirculating chillers are widely used for cooling and supporting:

    • Coal quality analyzers
    • Calorimeters
    • Rotary evaporators
    • Kjeldahl apparatus
    • Distillation systems
    • Electrophoresis equipment
    • Analytical instruments
    • Small molecular pumps
    • General laboratory equipment
    minicool-recirculating-chiller-lab-cooling-system.png

    Flexible Cooling Solution for Modern Labs

    MidiCool™ also functions as an immersion cooling solution for direct sample cooling. When paired with open-bath circulators, it provides a reliable and efficient alternative to traditional cooling methods.

    Eliminate the need for dry ice or nitrogen, reducing operational complexity, improving safety, and lowering costs, while maintaining precise temperature control.

  • Key Features

    Reliable Cooling for Demanding Laboratory Applications and Advanced Research

    Precise Temperature Control

    Advanced compressor refrigeration and intelligent PID control ensure stable, accurate cooling for sensitive laboratory and research applications.

    Compact & Low-Noise Design

    Portability and space-saving structure with quiet operation, ideal for laboratory benchtops, pilot systems, and research environments.

    Energy-Efficient Performance

    Adopts advanced rotary compressor, optimized refrigeration technology delivers reliable cooling while reducing energy consumption and operating costs.

    Wide Application Compatibility

    Perfect for rotary evaporators, bioreactors, fermentation systems, ultrasonic homogenizers, material testing equipment, and other laboratory instruments.

  • Documents Download

  • FAQ

    MidiCool™ Countertop Recirculating Chiller

  • MidiCool™ Chillers

    Smart Cooling for Modern Labs

    The MidiCool Lab Chiller is designed to deliver stable, precise, and energy-efficient cooling for laboratories and pilot-scale research. Powered by advanced compressor refrigeration technology and intelligent temperature control, it provides reliable constant-temperature circulation for demanding applications.

    Perfect for chemical engineering, biopharmaceuticals, and material research, MidiCool works seamlessly with rotary evaporators, bioreactors, fermentation systems, ultrasonic homogenizers, and material testing equipment.

    Its compact, low-noise design saves valuable laboratory space while ensuring a comfortable working environment. Built with high-quality components and multiple safety protections, MidiCool offers dependable long-term performance with minimal maintenance.

    Whether for scientific research, process development, or laboratory testing, the MidiCool Chiller is an efficient and cost-effective cooling solution trusted by modern laboratories.

  • Standard Products and Custom Solutions

    Established in 2010, RIGID is the manufacturer who's behind many popular brands in the US. RIGID's vision is to set the benchmark standard for the micro cooling industry. We are a Chinese manufacturer and supplier of compact cooling systems, working in close cooperation with the leading United States and European manufacturers of Air-conditioning & Refrigeration.

    In addition to offering standard products, including Micro DC Aircon (ruggedized air conditioner modules for compact and confined space cooling), Liquid Chiller Modules (battery-driven compact refrigeration systems that our customers integrate into their applications), and DC Condensing Units (the world's smallest direct cooling units used by customers in small freezer, medical, laser, and electronics cooling). RIGID also custom designs or modifies refrigeration systems for most customers' specific applications.

    Let our engineering team develop the perfect cooling solution for you!

    Micro DC Aircon

    Micro DC Aircon

    Ultra Compact & Light Weight

    Plate Liquid Chiller

    Plate Liquid Chiller

    Frame and Plate Evaporator

    Coaxial Type Liquid Chiller

    Coaxial Liquid Chiller

    St. St. Coaxial Evaporator

    Stainless Steel Liquid Chiller

    St. St. liquid Chiller

    Stainless St. Coil Evaporator

    Copper Coil Liquid Chiller

    Copper Liquid Chiller

    Copper Steel Coil Evaporator

    DC Condensing Unit

    DC Condensing Unit

    Ultra Small Direct Cooling