Julabo CORIO CD-900F Universal Heating and Cooling Circulating Bath

Overview

The Julabo CORIO CD-900F is a high-precision, air-cooled universal heating and cooling circulating bath engineered for demanding laboratory and pilot-scale applications requiring stable, bidirectional temperature control across an exceptionally wide operational range—from −40 °C to +150 °C. Built upon Julabo’s decades of thermal management expertise in German manufacturing, the CD-900F employs a single-stage hermetic compressor with R452A refrigerant—a low-GWP (2140) hydrofluoroolefin (HFO)-blended alternative compliant with current EU F-Gas Regulation (EU No 517/2014) phase-down schedules. Its PID-controlled thermal regulation system delivers ±0.03 °C stability at setpoint, supported by a high-resolution LED display (0.01–0.1 °C selectable resolution) and integrated internal temperature sensor calibrated to traceable NIST-traceable standards. Unlike conventional baths with exposed condenser coils or side-mounted exhausts, the CD-900F features a fully concealed evaporator coil and rear-integrated fan assembly—enabling unobstructed bath volume utilization and safe, space-efficient benchtop deployment in multi-unit configurations.

Key Features

• Full-range bidirectional temperature control (−40 °C to +150 °C) with ±0.03 °C stability at any setpoint within the operating envelope
• Air-cooled single-stage compression system using R452A refrigerant—certified for reduced environmental impact and aligned with global refrigerant transition frameworks
• Integrated dual-mode circulation pump (15 L/min flow, 0.35 bar max pressure) with externally accessible M16×1 female port and included 8 mm / 12 mm ID hose adaptors
• Optimized thermal architecture: hidden evaporator coil design maximizes usable bath volume (21–30 L stainless steel reservoir); no side-mounted heat exhausts
• DIN 12876-1 Class III (FL) certification—validating compliance with stringent safety requirements for flammable liquid handling environments
• User-centric interface: high-brightness white LED display, intuitive parameter navigation, USB port for firmware updates and remote monitoring via Julabo’s Labworldsoft platform
• Mechanically robust construction: removable ventilation grilles, drain valve, and insulated stainless-steel bath cover supplied as standard

Sample Compatibility & Compliance

The CD-900F is validated for use with water, water-glycol mixtures, silicone oils, and other thermally stable heat transfer fluids compatible with stainless steel (AISI 304) wetted parts. Its Class III (FL) safety rating per DIN 12876-1 confirms suitability for operation with flammable media—including ethanol, acetone, and low-flashpoint solvents—under controlled laboratory conditions. The unit meets CE marking requirements under the Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU. While not intrinsically rated for hazardous area installation (e.g., ATEX), its sealed refrigeration circuit, absence of ignition sources in the bath chamber, and thermal cut-off redundancy support integration into ISO/IEC 17025-accredited testing laboratories conducting method validation per ASTM E29, ISO/IEC 17025:2017 Clause 7.2.2 (equipment verification), and USP Analytical Instrument Qualification protocols.

Software & Data Management

The CD-900F supports USB-based communication with Julabo’s Labworldsoft software suite (v5.0+), enabling real-time temperature logging, profile programming (ramp/soak sequences), and export of timestamped CSV datasets compliant with ALCOA+ data integrity principles. Audit trail functionality—including user login, parameter changes, and alarm events—is available when operated in conjunction with Labworldsoft’s optional GLP/GMP-compliant mode (requires separate license). All firmware updates are delivered digitally and installed via USB; no proprietary drivers are required on Windows 10/11 or macOS 12+. The device maintains local event memory (last 100 alarms) independent of external software connectivity.

Applications

• Calibration of thermometers, RTDs, and thermocouples per ISO/IEC 17025 and ASTM E74
• Viscometer and rheometer temperature control (e.g., paired with Brookfield DVNext or Anton Paar MCR series)
• Stability testing of pharmaceutical formulations per ICH Q1A(R2) guidelines (long-term, accelerated, intermediate conditions)
• Reaction calorimetry and synthesis temperature profiling in organic chemistry and catalysis labs
• Material testing—including tensile, flexural, and impact testing per ASTM D638, D790, and D256—at controlled sub-zero or elevated temperatures
• Environmental simulation for electronics component qualification (e.g., JEDEC JESD22-A119 thermal cycling)

FAQ

What heat transfer fluids are recommended for operation below −20 °C?
Ethylene glycol/water (30:70 v/v) or specialized low-temperature silicone oils (e.g., DC200 fluid) are validated for continuous use down to −40 °C. Avoid pure water below 0 °C.
Is the CD-900F suitable for GMP-regulated environments?
Yes—when used with Labworldsoft GLP/GMP mode enabled, it supports 21 CFR Part 11-compliant electronic records, including audit trails, electronic signatures, and role-based access control.
Can external sensors be connected for bath temperature verification?
The unit does not support external PT100 input; however, independent calibration verification is performed using NIST-traceable reference thermometers inserted directly into the bath medium during IQ/OQ protocols.
What maintenance intervals are specified for the refrigeration system?
No scheduled refrigerant servicing is required. Julabo recommends annual inspection of air intake filters, condenser coil cleanliness, and pump seal integrity—documented per manufacturer’s Maintenance Log (Form JUL-ML-CD900F Rev. 3).