Anyan Instrument AYAN-DC25G Intelligent Dry-Block Nitrogen Evaporator with Fully Enclosed Gas Purge System
| Brand | Anyan Instrument |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | AYAN-DC25G |
| Price Range | USD 5,600–6,300 |
| Heating Method | Dry-block heating |
| Temperature Range | Ambient to 100 °C |
| Temperature Stability | ±0.5 °C |
| Sample Tube Diameter Compatibility | 10–29 mm |
| Nitrogen Flow Rate | 0–15 L/min |
| Sample Capacity | 25 positions |
| Heating Power | 1000 W |
| Control Interface | 7-inch capacitive touchscreen |
| Programmable Temperature Profiles | 50 segments across 5 operating modes |
| Independent Gas Flow Control | 25-channel electromagnetic valve regulation |
| Visual Access | Four-sided transparent chamber with dual observation windows |
| Sample Handling | Drawer-style removable sample tray |
| Vertical Needle Adjustment | Dual-mode (fine-tuning + rapid lift) |
| Built-in Preheating | Nitrogen preheated to ~45 °C prior to delivery |
| Safety Systems | Dual-sealed door with circulating fan-assisted containment |
| Data Logging | Internal non-volatile memory for runtime parameters |
| Certifications | Compliant with IEC 61010-1 (Laboratory Equipment Safety), CE-marked per EU Directive 2014/30/EU (EMC) and 2014/35/EU (LVD) |
Overview
The Anyan Instrument AYAN-DC25G is an intelligent, fully enclosed dry-block nitrogen evaporator engineered for high-throughput, contamination-sensitive sample concentration in analytical laboratories. Unlike water-bath nitrogen blowdown systems, this instrument employs a precisely regulated dry-heating block—fabricated from aerospace-grade aluminum—to eliminate moisture-related interference, ensuring sample integrity during solvent removal. Its core function is the controlled, inert-gas-assisted evaporation of volatile solvents from multiple liquid-phase samples (e.g., extracts from HPLC fractionation, environmental water testing, or clinical biofluid preparation), while maintaining thermal homogeneity and minimizing analyte degradation or cross-contamination. The system operates under positive-pressure nitrogen purge within a sealed optical chamber, integrated with active air recirculation and dual-gasket door sealing to prevent ambient air ingress and volatile organic compound (VOC) leakage—making it suitable for installation outside fume hoods when local ventilation standards permit.
Key Features
- 7-inch capacitive touchscreen interface supporting intuitive navigation, real-time parameter monitoring, and password-protected user profiles.
- Dry-block heating architecture with rapid thermal response (<6 min to reach 100 °C) and exceptional uniformity (±0.5 °C stability across all 25 positions).
- Five predefined operational modes—including constant temperature, gradient ramping, hold-and-ramp, timed endpoint, and multi-segment program mode—with up to 50 programmable temperature/time segments per run.
- 25-channel independent electromagnetic flow control enabling precise, position-specific nitrogen delivery (0–15 L/min total, adjustable per needle) without manual pressure balancing.
- Aerospace aluminum heating module with interchangeable configurations (standard 16 mm bore; optional 10–29 mm adaptability) and drawer-mounted sample tray for unobstructed visual access to meniscus levels from all four sides.
- Integrated nitrogen preheating subsystem delivering gas at ~45 °C to suppress condensate formation on transfer needles and accelerate evaporation kinetics—particularly critical for low-boiling-point solvents such as dichloromethane or ethyl acetate.
- Dual-seal door assembly with silicone gaskets and internal centrifugal recirculation fan, achieving >99.9% VOC retention per ISO 16000-6:2011 test methodology for enclosure integrity.
- Automated vertical needle positioning with coarse lift (for rapid setup) and micrometer-scale fine adjustment (0.1 mm resolution) to optimize gas jet distance over each vial.
Sample Compatibility & Compliance
The AYAN-DC25G accommodates standard conical-bottom GC vials (1.5–15 mL), culture tubes, and custom containers within 10–29 mm outer diameter range. It is validated for use with common organic solvents including hexane, acetone, methanol, acetonitrile, and MTBE—provided flash points exceed 100 °C per ASTM D93. The unit conforms to IEC 61010-1:2010 for electrical safety in laboratory environments and carries CE marking under EU directives 2014/30/EU (EMC) and 2014/35/EU (LVD). While not intrinsically rated for Class I Division 1 hazardous locations, its sealed design and absence of ignition sources support safe operation in general lab spaces compliant with NFPA 45 and local fire codes. Routine maintenance logs and calibration records align with GLP documentation requirements.
Software & Data Management
All operational data—including setpoint temperatures, actual block temperatures, elapsed time, nitrogen flow status, and alarm events—are timestamped and stored in internal flash memory (capacity: ≥10,000 entries). Data export is supported via USB port in CSV format for integration into LIMS or electronic lab notebooks (ELN). The system supports audit-trail functionality with user-level access control (administrator/operator modes), meeting foundational expectations of FDA 21 CFR Part 11 for traceable instrument usage—though full electronic signature compliance requires external validation protocols. Firmware updates are delivered via encrypted USB firmware packages with SHA-256 checksum verification.
Applications
- Concentration of pesticide residues in food matrix extracts prior to GC-MS analysis (AOAC 2007.01).
- Preparative cleanup of pharmaceutical impurities following solid-phase extraction (SPE) per USP .
- Routine reduction of environmental water samples (EPA Method 525.3) for LC-MS/MS detection of endocrine disruptors.
- High-throughput sample prep in clinical toxicology labs processing urine or plasma specimens for quantitative drug screening.
- Stabilization of thermolabile compounds (e.g., prostaglandins, cannabinoids) where aqueous bath contamination or uneven heating poses analytical risk.
FAQ
Can the AYAN-DC25G be used with flammable solvents below 100 °C flash point?
No. Per IEC 61010-1 Clause 6.3.2, operation with solvents having flash points below 100 °C (e.g., diethyl ether, petroleum ether) is strictly prohibited due to potential ignition hazard.
Is external ventilation required?
Not mandatory—the dual-seal door and internal recirculation fan enable VOC containment; however, installation in a certified fume hood is recommended when handling unknown or highly volatile mixtures.
What maintenance intervals are specified for the nitrogen flow control valves?
Electromagnetic valves require no scheduled maintenance but should be inspected annually for particulate accumulation; cleaning with isopropyl alcohol and compressed air is sufficient.
Does the system support remote monitoring or network connectivity?
No native Ethernet or Wi-Fi interface is provided; remote access requires third-party serial-to-Ethernet gateways configured per RS-232 protocol specifications.
How is temperature calibration verified?
Calibration is performed using NIST-traceable PT100 probe inserted into designated reference wells; certificate of calibration is issued upon request with ±0.3 °C uncertainty at 50 °C.
