Fisher Scientific Isotemp Refrigerated/Heated Circulator 8.6 L Capacity 21 L/min.

Fisher Scientific Isotemp Model 6200 R28 Refrigerated / Heated Circulating Water Bath, 8.6 L Capacity (211333800)

The Fisher Scientific Isotemp Model 6200 R28 Refrigerated/Heated Circulator (211333800) is a high-performance, closed/open-loop benchtop thermal fluid conditioning system designed for precise temperature control in analytical, bioprocessing, and clinical laboratory workflows. Featuring an 8.6-liter reservoir capacity and a powerful 21 L/min dual-speed force-suction pump, the Isotemp 6200 R28 delivers rapid heating and cooling kinetics across a wide operating temperature range. Engineered with a heavy-duty industrial refrigeration compressor and micro-processor-controlled heating elements, this circulator provides exceptional thermal stability for both internal bath fluid conditioning and external closed-loop applications such as jacketed reactors, rotary evaporators, refractometers, and chromatography systems.

Technical Performance & Structural Attributes

• Microprocessor PID Temperature Control: Maintains tight thermal accuracy and stability across the entire temperature spectrum, preventing overshoot during critical incubation protocols.
• High-Flow Force/Suction Circulation Pump: Variable-speed pump engine delivers up to 21 L/min flow rate, facilitating efficient heat exchange in external jacketed vessels while providing vigorous internal bath agitation.
• CFC-Free Refrigeration System: High-capacity refrigeration compressor provides fast pull-down times and efficient heat removal even at elevated ambient room temperatures.
• Stainless Steel Reservoir Chamber: Corrosion-resistant stainless steel bath interior with rounded corners enables easy cleaning and resists degradation from thermal transfer fluids and sanitizing agents.
• Multi-Stage Safety Architecture: Includes over-temperature safety cutoffs, low-liquid-level float switches, and motor overload protection to prevent thermal runaways or dry-run pump damage.

Product Specifications

• Catalog / Model Number: 6200 R28 (Part Number: 211333800)
• Primary Manufacturer: Fisher Scientific / Thermo Fisher Scientific
• Equipment Class: Refrigerated & Heated Laboratory Circulating Water Bath
• Reservoir Capacity: 8.6 Liters (2.27 Gallons)
• Maximum Pump Flow Rate: Up to 21 L/min (5.5 GPM)
• Temperature Operating Range: -28°C to +150°C (-18°F to +302°F)
• Temperature Stability: ±0.01°C to ±0.02°C
• Cooling Capacity: ~800 Watts at 20°C
• Display & Interface: Digital LED display with intuitive parameter entry buttons and status indicators
• External Plumbing Ports: Barbed fitting connections for closed-loop external recirculation
• Electrical Requirements: 115V AC, 60 Hz, single phase

Key Benefits & Applications

• External Instrument Fluid Conditioning: Supplies temperature-controlled fluid to jacketed reaction flasks, condenser columns, HPLC column compartments, and bio-reactors.
• Analytical & Clinical Sample Incubation: Holds microplates, test tube racks, and reagent bottles at stable temperatures for enzymatic reactions and cell culture studies.
• Versatile Thermal Range (-28°C to 150°C): Supports both low-temperature crystallization/sample storage and high-temperature organic synthesis protocols.
• Reliable Benchtop Footprint: Compact cabinet design maximizes bench space while providing industrial-grade heating and cooling performance.

Tested to be in great working condition. See video here!

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