Julabo CORIO CD-201F Universal Heating and Cooling Circulating Bath

Overview

The Julabo CORIO CD-201F is a precision-engineered universal heating and cooling circulating bath designed for demanding laboratory and pilot-scale applications requiring stable, bidirectional temperature control across an exceptionally wide operating range (−20 to +150 °C). It operates on the principle of forced liquid circulation—using a high-efficiency centrifugal pump to deliver thermostatic fluid (water, water-glycol mixtures, or silicone oil) either internally through its integrated stainless steel bath chamber or externally to jacketed reactors, viscometers, spectrophotometer cells, or other process equipment. Its air-cooled, single-stage compression refrigeration system—charged with R134a—is optimized for low acoustic emission (<45 dB(A)) and spatial efficiency, enabling reliable placement in compact benchtop environments or multi-unit configurations without thermal cross-interference. The unit’s PID-based digital temperature control architecture ensures dynamic response to load changes while maintaining long-term stability at ±0.03 °C—critical for kinetic studies, calibration traceability, and ISO/IEC 17025-compliant testing workflows.

Key Features

• Wide operational temperature span from −20 °C to +150 °C with seamless transition between heating and cooling modes
• DIN 12876-1 Class III (FL) certification for flammable liquid safety—validated for use with organic solvents and heat-transfer oils
• High-resolution LED display with user-selectable resolution (0.01 °C or 0.1 °C) and intuitive menu navigation
• Integrated M16×1 external circulation port with two included conical hose fittings (for 8 mm and 12 mm ID tubing)
• Hidden internal evaporator coil design maximizes usable bath volume and simplifies cleaning and maintenance
• Detachable front air grille and rear service panel for unrestricted access to compressor, pump, and electronics
• No side-mounted condenser exhaust—enables flush installation in cabinets or adjacent to other instrumentation
• Standard equipment includes stainless steel bath cover, bottom drain valve, and USB interface for firmware updates and basic parameter logging

Sample Compatibility & Compliance

The CORIO CD-201F accommodates diverse thermal media—including deionized water, 30–50% aqueous glycol solutions, and low-viscosity silicone oils (up to 50 cSt)—ensuring compatibility with applications ranging from cryogenic enzyme assays to high-temperature polymer melt conditioning. Its Class III (FL) certification per DIN 12876-1 confirms mechanical integrity, overtemperature cutoff redundancy, and leak-resistant construction when used with flammable liquids. The unit meets CE marking requirements under the EU Machinery Directive 2006/42/EC and Electromagnetic Compatibility Directive 2014/30/EU. While not inherently 21 CFR Part 11 compliant, its USB interface supports integration into validated systems where audit-trail-capable software (e.g., Julabo’s Winthermo or third-party LabVIEW/LabArchives) manages setpoint history, alarm logs, and user authentication.

Software & Data Management

The built-in USB port enables local configuration backup, firmware upgrades, and time-stamped export of temperature setpoints and actual values (sampled at 1 Hz) to CSV files. For networked or GxP-regulated environments, the CORIO CD-201F can be interfaced via RS232-to-USB adapters or industrial Ethernet gateways using Modbus RTU protocol (available via optional firmware). Julabo’s Winthermo software provides remote monitoring, multi-device synchronization, and configurable alarm thresholds—supporting GLP-aligned documentation practices including electronic signature prompts and change-tracking metadata. All internal event logs (e.g., compressor start/stop cycles, overtemperature events, door-open detection) are timestamped and retained for ≥30 days in non-volatile memory.

Applications

• Calibration of thermometers, RTDs, and thermocouples per ASTM E74 and ISO 17025
• Temperature-controlled dissolution testing (USP ) and stability chamber qualification
• Viscometry support for rotational and capillary rheometers requiring precise thermal preconditioning
• Reaction calorimetry and exotherm management in small-scale synthesis
• Optical spectroscopy cell temperature stabilization (UV-Vis, FTIR, fluorescence)
• Material testing per ASTM D5272 (heat aging of elastomers) and ISO 188 (air-oven aging)

FAQ

What types of fluids are compatible with the CORIO CD-201F?

Deionized water, 30–50% propylene glycol/water mixtures, and low-viscosity silicone oils (≤50 cSt) are recommended. Avoid ethylene glycol above 40% concentration due to increased viscosity and potential pump cavitation.
Can the unit maintain ±0.03 °C stability at 150 °C?

Yes—the specified stability applies across the full range, though optimal performance requires proper fluid selection, adequate bath fill level (3–4 L), and minimal external thermal load.
Is external pump control supported?

No—the internal pump operates continuously during circulation mode; flow rate is fixed at 15 L/min and cannot be modulated via external signal.
Does the unit include a factory calibration certificate?

A basic conformity statement is provided; NIST-traceable calibration certificates with as-found/as-left data are available as a paid option (Order Code CAL-CD201F).
How often does the R134a refrigerant require servicing?

Under normal operation and proper ventilation (5–40 °C ambient), the sealed refrigeration circuit requires no scheduled maintenance or recharge for ≥8 years—per Julabo’s accelerated life testing protocol.