Chengmeng CM-12PUS Automated Nitrogen Evaporator
| Brand | Chengmeng |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | Chengmeng CM-12PUS Automated Nitrogen Evaporator |
| Instrument Type | Automated Quantitative Sample Concentrator |
| Temperature Range | Ambient to 100 °C |
| Temperature Control Accuracy | ±0.5 °C |
| Sample Volume Capacity per Vial | 50–150 mL |
| Maximum Simultaneous Samples | 64 (configurable: 12/24/36/64 positions) |
| Nitrogen Input Pressure Range | 7–145 psi |
| Output Pressure Range | 0–72.5 psi |
| Heating Power | 2200 W |
| Display | 8-inch HD Touchscreen (800×480 resolution) |
| Sample Detection | Optical Fiber Sensor for Endpoint Detection at 0.5 mL or 1.0 mL |
| Water Bath Material | Stainless Steel |
| Control Modes | Manual & Automatic |
| Compliance | Designed for GLP-compliant laboratories |
Overview
The Chengmeng CM-12PUS Automated Nitrogen Evaporator is an engineered solution for high-throughput, reproducible solvent removal in analytical sample preparation workflows. It operates on the principle of inert gas-assisted surface evaporation—introducing precisely regulated nitrogen flow across heated liquid surfaces within sample vials to accelerate solvent volatilization while minimizing analyte degradation, oxidation, or thermal decomposition. Unlike open-air drying or rotary evaporation, this system maintains sample integrity under controlled thermal and gaseous conditions, making it especially suitable for thermolabile compounds encountered in GC, LC, and LC-MS applications. The instrument integrates water-bath heating with vortex-style nitrogen dispersion, ensuring uniform heat transfer and enhanced mass transfer efficiency across all sample positions. Its architecture prioritizes operational safety, energy efficiency, and method reproducibility—key requirements for regulated environments including pharmaceutical QC, environmental testing, and food safety laboratories.
Key Features
- Stainless steel water bath with corrosion-resistant construction and wide-curved front-view window for real-time visual monitoring without interrupting operation.
- PID-controlled temperature regulation (ambient to 100 °C) with ±0.5 °C accuracy, ensuring consistent thermal profiles across all vial positions.
- Vortex-type nitrogen dispersion technology increases effective surface area contact and suppresses splashing or cross-contamination between adjacent samples.
- Optical fiber endpoint detection enables precise automatic termination at user-defined residual volumes (0.5 mL or 1.0 mL), with optional near-dry mode (~0.1 mL) achievable via extended吹扫 time.
- Modular sample capacity: configurable platforms support 12, 24, 36, or up to 64 simultaneous samples; compatible with vials ranging from 15 mL to 150 mL.
- Real-time digital display of nitrogen pressure, water bath temperature, elapsed time, and system status on an integrated 8-inch HD touchscreen (800×480 resolution).
- Dual-mode control (manual and automated) with one-touch master nitrogen valve activation and programmable start/stop logic based on temperature stabilization.
- Intelligent safety interlocks: low-water-level alarm, over-temperature cutoff, dry-run prevention, and automatic shutdown upon timer expiration or endpoint detection.
- Quick-connect drainage system with leak-resistant sealing and audible/visual alerts for maintenance readiness.
Sample Compatibility & Compliance
The CM-12PUS accommodates a broad range of standard and custom-format sample containers—including glass test tubes, culture tubes, and conical vials—without requiring adapter kits. Its electromagnetic valve array allows independent channel activation, enabling heterogeneous sample sets (e.g., differing solvents, concentrations, or volumes) to be processed concurrently with optimized gas flow per position. From a regulatory perspective, the system supports Good Laboratory Practice (GLP) and current Good Manufacturing Practice (cGMP) workflows through deterministic endpoint control, non-volatile parameter storage, and timestamped event logging. While not pre-certified to FDA 21 CFR Part 11, its architecture permits integration into validated laboratory information management systems (LIMS) where electronic signatures, audit trails, and data integrity controls are enforced at the enterprise level.
Software & Data Management
The CM-12PUS features embedded firmware with no external PC dependency. All operational parameters—including target temperature, nitrogen pressure setpoints, countdown timers, and endpoint volume thresholds—are stored locally with retention across power cycles. The interface supports seamless switching between English and Chinese language modes, facilitating multi-regional deployment. Although the device does not include cloud connectivity or remote diagnostics, its internal memory logs critical events (e.g., temperature deviations >±1.0 °C, pressure fluctuations exceeding ±5 psi, or sensor-triggered terminations) with date/time stamps—enabling traceability during internal audits or method validation reviews. Export functionality is limited to manual screen capture via HDMI output (optional accessory); data export to CSV or PDF requires third-party documentation protocols aligned with institutional SOPs.
Applications
- Routine concentration of extracts prior to GC-FID, GC-MS, or HPLC analysis in environmental testing (e.g., pesticide residues in soil/water matrices).
- Preparative cleanup steps in clinical toxicology labs handling blood plasma, urine, or oral fluid specimens.
- High-volume sample reduction in food safety labs performing mycotoxin, veterinary drug, or heavy metal residue screening.
- Parallel processing of calibration standards and QC reference materials to ensure batch-to-batch consistency in regulated assay development.
- Supporting solid-phase extraction (SPE) and liquid-liquid extraction (LLE) workflows where final solvent exchange or volume adjustment is required before instrumental injection.
FAQ
What is the maximum number of samples the CM-12PUS can process simultaneously?
The system supports up to 64 samples in a single run, with configurable configurations available for 12-, 24-, 36-, and 64-position formats.
Does the instrument support variable nitrogen flow rates per channel?
No—the CM-12PUS delivers consistent nitrogen flow distribution across active channels but does not provide individual flow metering or fine-tuning per vial.
Can the water bath accommodate irregularly shaped or oversized containers?
Only standard cylindrical vials with diameters compatible with the fixed-height rack system (15–150 mL nominal capacity) are supported; custom racks require factory consultation.
Is the optical endpoint sensor compatible with colored or turbid samples?
The fiber-optic sensor detects meniscus height optically and may require empirical calibration for highly opaque or strongly absorbing solutions; clear to lightly amber solvents yield optimal performance.
What electrical specifications must be met for safe installation?
The unit operates on 220 V/110 V AC, 50/60 Hz, with a rated power draw of 2200 W; dedicated 16A circuit protection and proper grounding are mandatory.
