WIGGENS CTB-40C Cryogenic Cold Trap Cooling System

Overview

The WIGGENS CTB-40C Cryogenic Cold Trap Cooling System is an engineered solution for precise, stable low-temperature condensation in vacuum-based laboratory processes. Designed around a high-efficiency closed-loop refrigeration architecture using environmentally compliant R-404A refrigerant, the system operates on the principle of vapor-phase condensation—capturing volatile solvents, moisture, and reactive vapors before they reach sensitive vacuum pumps or analytical instrumentation. Unlike passive dry ice traps, the CTB-40C delivers active, digitally regulated cooling down to −40 °C with thermal stability of ±0.3 °C over time, enabling reproducible cryo-trapping in applications such as rotary evaporation, freeze-drying pre-cooling, enzymatic reaction quenching, and cold trapping in gas chromatography sample preparation. Its compact footprint and integrated safety features make it suitable for benchtop integration in GLP-compliant QC labs, academic research facilities, and pharmaceutical development environments.

Key Features

• Digitally programmable temperature control from −40 °C to +20 °C with PID algorithm for minimal overshoot and rapid thermal equilibration
• 4.8 L borosilicate glass cold trap chamber (Ø210 × H204 mm) optimized for high-surface-area condensation and visual process monitoring
• Dual-stage refrigeration circuit with LBP (Low Back Pressure) compressor design—enabling faster cooldown rates and improved energy efficiency compared to single-stage alternatives
• Anti-icing function prevents frost accumulation on internal bath walls, ensuring consistent heat transfer and long-term operational reliability
• Front-access removable condenser cover facilitates routine maintenance and dust removal without disassembly
• Integrated overcurrent protection and thermal cut-off safeguards comply with IEC 61010-1 safety standards for laboratory equipment
• Low-noise operation (<58 dB(A) at 1 m) supports use in shared lab spaces and noise-sensitive analytical suites

Sample Compatibility & Compliance

The CTB-40C accommodates standard Ø25–Ø35 mm glass trap configurations and interfaces seamlessly with common vacuum manifolds, rotary evaporators (e.g., Buchi, IKA), and lyophilizers via PTFE or silicone tubing (sold separately). Its −40 °C minimum operating point enables effective capture of acetone (bp 56 °C), dichloromethane (bp 40 °C), ethyl acetate (bp 77 °C), and low-boiling organics commonly used in extraction workflows. The unit meets CE marking requirements and conforms to EN 61326-1 (EMC) and EN 61010-1 (safety). When deployed in GMP-regulated environments, its digital setpoint logging capability—when paired with external data acquisition systems—supports traceability under FDA 21 CFR Part 11 when audit trails are implemented at the software layer.

Software & Data Management

While the CTB-40C operates via an embedded microcontroller with LED display and tactile keypad (no onboard PC interface), its analog output (0–10 V) and RS232 port enable connection to third-party SCADA platforms or lab information management systems (LIMS). Temperature setpoints, real-time bath readings, and alarm status are accessible via ASCII protocol commands. For regulated laboratories, external validation protocols—including IQ/OQ documentation templates—are available upon request from WIGGENS technical support. All firmware revisions undergo version-controlled release cycles aligned with ISO/IEC 17025 calibration traceability frameworks.

Applications

• Vacuum pump protection during solvent removal in rotary evaporation and short-path distillation
• Cryo-quenching of enzymatic reactions in molecular biology and protein biochemistry workflows
• Condensation of acidic or corrosive vapors (e.g., HCl, acetic acid) when used with fluoropolymer-lined traps
• Pre-cooling of condensers in freeze-dryer primary drying stages to improve sublimation efficiency
• Low-temperature solvent recovery in green chemistry and process scale-up studies
• Stabilization of thermolabile compounds during GC sample introduction or headspace analysis

FAQ

Does the CTB-40C include tubing or vacuum fittings?
No—the system ships with the main unit and two borosilicate glass traps only. Vacuum tubing, clamps, and adapters must be selected based on application-specific pressure and chemical compatibility requirements.
Can the unit maintain −40 °C under continuous vacuum load?
Yes—its refrigeration capacity is rated for sustained operation at −40 °C with ≤10 mbar system pressure, provided ambient temperature remains ≤25 °C and ventilation clearance ≥10 cm is maintained around the condenser.
Is the CTB-40C compatible with aggressive solvents like chloroform or THF?
The glass trap chamber is chemically inert toward most organic solvents; however, prolonged exposure to strong oxidizers (e.g., nitric acid fumes) or hydrofluoric acid requires optional quartz trap upgrades and custom sealing materials.
What is the recommended maintenance interval?
Compressor oil and refrigerant integrity should be verified annually by authorized service personnel; condenser cleaning is advised every 3 months in high-dust environments.
How does the anti-icing function operate?
A periodic low-power heating cycle (±0.5 °C above setpoint for 90 seconds every 2 hours) prevents ice nucleation on bath walls without disrupting trap performance or thermal stability.