Anyan AYAN-DC12S Fully Enclosed Water Bath Nitrogen Evaporator
| Brand | Anyan |
|---|---|
| Origin | Zhejiang, China |
| Model | AYAN-DC12S |
| Heating Method | Water Bath |
| Temperature Range | Ambient to 100 °C |
| Temperature Uniformity | ±1 °C |
| Sample Capacity | 12 positions |
| Tube Compatibility | 50 mL or 150 mL vials |
| Gas Flow Control | 0–15 L/min (adjustable per channel) |
| Heating Power | 1000 W |
| Display | 7-inch capacitive touchscreen |
| Control Modes | 5 preset + 50 programmable temperature ramps |
| Preheated Nitrogen Delivery | ~45 °C |
| Sealing System | Dual-sealed observation door with circulating fan |
| Data Logging | Internal storage for operational parameters and run history |
Overview
The Anyan AYAN-DC12S Fully Enclosed Water Bath Nitrogen Evaporator is an engineered solution for reproducible, low-temperature solvent removal in analytical sample preparation workflows. It operates on the principle of gentle nitrogen gas displacement—where a stream of preheated, inert nitrogen is directed tangentially across the surface of liquid samples immersed in a precisely controlled water bath. This dual-mode thermal management (water bath conduction + convective gas stripping) enables efficient evaporation while minimizing thermal degradation, oxidation, or cross-contamination risks common in open-vessel concentration methods. Designed for compliance-critical environments—including food safety testing, environmental residue analysis (e.g., EPA Method 525.3), pharmaceutical QC (USP & ICH Q5A), and clinical research—the system integrates physical containment, real-time parameter monitoring, and audit-ready data logging without requiring external fume hood integration.
Key Features
- 7-inch high-resolution capacitive touchscreen interface with intuitive navigation, supporting multi-user access control and password-protected method editing.
- Fully enclosed chamber with dual-layer tempered glass observation windows (front and side), providing unobstructed visual monitoring of all 12 sample positions during operation.
- Integrated nitrogen preheating module maintaining consistent outlet gas temperature at approximately 45 °C—reducing condensation on needle tips and preventing re-deposition of volatile analytes.
- Independent electromagnetic flow control valves for each position, enabling precise, channel-specific gas delivery (0–15 L/min range) and eliminating inter-channel pressure drift.
- Automated pressure regulation system ensuring uniform gas distribution across all channels, critical for inter-sample comparability in GLP-compliant validation studies.
- Dual-sealed door architecture with internal recirculating fan, eliminating vapor escape and eliminating dependency on laboratory ventilation infrastructure.
- Onboard memory storing up to 50 user-defined temperature ramp profiles and full runtime logs—including start/stop timestamps, setpoints, actual temperatures, and gas flow events.
- Water bath constructed from corrosion-resistant stainless steel (304 grade), compatible with aqueous buffers, organic solvents (e.g., acetonitrile, ethyl acetate), and mild acidic/basic solutions under routine use conditions.
Sample Compatibility & Compliance
The AYAN-DC12S accommodates standard 50 mL and 150 mL borosilicate glass tubes, as well as compatible polypropylene vials rated for temperatures up to 100 °C. Its sealed design meets ISO 17025:2017 requirements for environmental control during sample processing, and supports traceability through time-stamped digital records aligned with FDA 21 CFR Part 11 Annex 11 principles (audit trail, electronic signature readiness). The system avoids direct electrical contact with liquids and incorporates grounded three-pin power input, conforming to IEC 61010-1 safety standards for laboratory equipment. While not certified for Class I Division 1 hazardous locations, it is explicitly unsuitable for use with substances having flash points below 100 °C (e.g., diethyl ether, petroleum ether) or strong oxidizers.
Software & Data Management
No proprietary software installation is required; all configuration, execution, and data review occur via the embedded Linux-based OS. Run logs export directly to USB storage in CSV format—structured with columns for timestamp, channel ID, target/actual temperature, gas flow rate, and alarm status (e.g., low water level, overtemperature). Each stored method includes metadata such as operator ID, date created, and version number. For laboratories implementing LIMS integration, the device supports manual CSV ingestion into platforms like LabWare, STARLIMS, or Thermo Fisher SampleManager via standardized import templates. All data entries are immutable post-run—modifications require new session initiation, satisfying ALCOA+ data integrity criteria (Attributable, Legible, Contemporaneous, Original, Accurate).
Applications
- Residue analysis: Concentration of pesticide extracts (e.g., QuEChERS supernatants) prior to GC-MS/MS or LC-MS/MS injection.
- Environmental testing: Pre-concentration of PAHs, PCBs, and organochlorine compounds from water or soil extracts per EPA Methods 8270/8082.
- Food & beverage QA: Removal of solvents from fatty acid methyl ester (FAME) preparations and mycotoxin cleanup fractions.
- Pharmaceutical development: Final volume adjustment of stability-indicating assay standards and impurity reference materials.
- Clinical toxicology: Drying down urine or plasma extracts after solid-phase extraction (SPE) for amphetamine or opioid screening.
FAQ
What is the maximum recommended operating temperature for the water bath?
The unit is rated for continuous operation from ambient temperature up to 100 °C. Sustained use above 95 °C requires distilled or deionized water to prevent scale buildup in the heating element.
Can this instrument be used with corrosive solvents such as concentrated HCl or NaOH solutions?
No. While the stainless steel bath resists mild acidity and alkalinity, prolonged exposure to strong acids/bases will compromise gasket integrity and accelerate metal fatigue. Use only with solvents listed in the manufacturer’s chemical compatibility chart.
Is remote monitoring or network connectivity supported?
The AYAN-DC12S does not include Ethernet/Wi-Fi modules. Remote oversight is limited to local USB export and manual transfer of log files.
How often should the water bath be refilled or replaced?
Daily visual inspection is advised. Refill with fresh distilled water before each batch if evaporation exceeds 15% of initial volume. Replace entirely every 72 hours during continuous operation to maintain thermal consistency and prevent microbial growth.
Does the system comply with Good Laboratory Practice (GLP) documentation requirements?
Yes—when operated with enabled data logging and method versioning, it fulfills core GLP expectations for instrument traceability, raw data retention, and procedural reproducibility, though formal site-specific qualification (IQ/OQ/PQ) remains the user’s responsibility.
