ColdTrap Pro 3L Low-Temperature Cold Trap
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Classification | Domestic (China) |
| Model | CT-3L |
| Pricing | Available Upon Request |
| Cryogen Capacity | 5 kg |
| Minimum Bath Temperature | ≤ −40 °C |
| Temperature Control | Adjustable via PID controller |
| Installation | Benchtop or fume hood compatible |
| Net Weight | 63 kg |
| Dimensions (W×D×H) | 530 mm × 560 mm × 980 mm |
| Power Supply | Single-phase AC 220 V, 50 Hz |
| Maximum Vessel Volume Supported | 3 L (standard borosilicate glass Dewar or jacketed reactor) |
Overview
The ColdTrap Pro 3L Low-Temperature Cold Trap is a precision-engineered cryogenic condensation system designed for laboratory-scale vacuum applications requiring reliable, stable sub-zero thermal environments. Operating on the principle of direct-contact cryogenic cooling—where volatile vapors are condensed by thermal exchange with a chilled liquid bath—the unit delivers consistent temperature control down to ≤ −40 °C using standard low-temperature heat transfer fluids (e.g., ethanol/methanol mixtures or specialized cryo-solvents). Unlike passive dry-ice traps, this active cold trap integrates a high-efficiency refrigeration circuit with closed-loop PID temperature regulation, enabling reproducible thermal profiles essential for solvent recovery, reaction quenching, and vapor trapping in rotary evaporation, distillation, and vacuum drying workflows. Its structural design prioritizes thermal stability, mechanical rigidity, and safe integration into ISO-compliant fume hood environments.
Key Features
- Stable cryogenic bath operation at ≤ −40 °C, maintained with ±1.5 °C accuracy across the full setpoint range (−5 °C to −40 °C)
- Optimized thermal chamber geometry accommodating standard 3 L round-bottom flasks, jacketed reactors, or dual-neck Dewar vessels (up to Ø150 mm diameter)
- Corrosion-resistant stainless-steel cold finger and bath housing, sealed against solvent permeation and condensate ingress
- Integrated digital PID controller with real-time temperature display, adjustable ramp/soak programming, and over-temperature safety cutoff
- Benchtop form factor engineered for compatibility with Class I and II chemical fume hoods—meets ANSI/ASHRAE 110 containment verification criteria when installed per manufacturer guidelines
- Low-noise, hermetically sealed compressor system compliant with EU ErP Directive 2009/125/EC energy efficiency standards
Sample Compatibility & Compliance
The ColdTrap Pro 3L supports a broad range of sample containers including borosilicate glass (DIN 28720, ASTM E438 Type I), fluoropolymer-lined vessels, and vacuum-rated jacketed reactors. It is routinely deployed in GLP-regulated environments for controlled condensation of acetone, dichloromethane, ethyl acetate, THF, and other medium-volatility solvents (bp 35–80 °C). The unit conforms to IEC 61010-1:2010 for electrical safety in laboratory equipment and incorporates dual-level ground-fault protection. When operated under validated SOPs, it supports compliance with USP Analytical Instrument Qualification and FDA 21 CFR Part 11 data integrity requirements when paired with compliant logging software.
Software & Data Management
While the base model operates via standalone hardware controls, optional RS-485/Modbus RTU interface enables integration with LabArchives ELN, DeltaV DCS, or custom SCADA platforms. Temperature logs (timestamped, with setpoint/actual deviation) can be exported as CSV via USB port. Firmware supports audit trail configuration (user login, parameter changes, alarm events), satisfying ALCOA+ principles for raw data retention. No cloud connectivity is embedded—data remains on-device unless explicitly transferred, aligning with institutional IT security policies for regulated laboratories.
Applications
- Solvent trapping during rotary evaporation (e.g., removal of acetone from peptide synthesis mixtures)
- Cryogenic quenching of exothermic Grignard or organolithium reactions under inert atmosphere
- Vapor phase capture in short-path distillation of heat-sensitive natural extracts
- Condensation of acidic or corrosive vapors (e.g., HCl, SO₂) prior to scrubber inlet in exhaust treatment systems
- Stabilization of thermally labile intermediates during lyophilization cycle development
- Calibration support for dew point hygrometers and residual gas analyzers requiring trace moisture suppression
FAQ
What cryogenic fluids are compatible with the CT-3L bath?
Ethanol, methanol, isopropanol, and commercial low-temperature heat transfer fluids (e.g., Dowtherm J) are validated. Dry ice slurries are not recommended due to thermal shock risk and inconsistent bath homogeneity.
Can the unit operate continuously for 72+ hours?
Yes—designed for unattended 24/7 operation under nominal load; compressor duty cycle remains ≤ 65% at −40 °C setpoint with 25 °C ambient.
Is the cold finger removable for cleaning or maintenance?
Yes—the stainless-steel cold finger assembly detaches without tools and is autoclavable up to 121 °C (non-operational state only).
Does the system meet CE marking requirements?
Yes—certified to EN 61000-6-3 (EMC) and EN 61000-6-2 (immunity), with Declaration of Conformity available upon request.
What is the minimum vacuum level the trap can sustain without icing or performance loss?
Validated performance is maintained at pressures ≥5 × 10⁻² mbar; below this threshold, supplemental LN₂ pre-cooling of the cold finger is recommended for optimal condensation efficiency.
