Anyan AYAN-20L Membrane-Based Nitrogen Generator
| Brand | Anyan |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | AYAN-20L2 |
| Nitrogen Generation Principle | Membrane Separation |
| Output Flow Rate | 20 L/min |
| Output Pressure Range | 0–0.6 MPa |
| Nitrogen Purity | 99% |
| Dew Point | Not specified in source data |
| Power Consumption | 2600 W |
| Input Voltage | 380 V AC |
| Dimensions (W×D×H) | 400 × 300 × 1300 mm |
| Filtration Stages | Three-stage |
| Particle Removal Efficiency | <0.01 µm |
| Oil & Moisture Content | ≤0.003 mg/m³ |
Overview
The Anyan AYAN-20L is a compact, integrated membrane-based nitrogen generator engineered for continuous, on-demand supply of high-purity nitrogen gas (99% N₂) in laboratory and light industrial environments. It employs selective permeation through imported Korean polymeric hollow-fiber membranes—a well-established gas separation principle rooted in differences in gas solubility and diffusivity across the membrane matrix. Under applied pressure, oxygen, water vapor, and CO₂ exhibit higher permeation rates than nitrogen, enabling efficient separation without moving parts, chemical consumables, or pressure-swing adsorption (PSA) valve cycling. This architecture delivers stable nitrogen output within ≤3 minutes of startup, eliminates the need for external air compressors, and supports plug-and-play operation in analytical labs, GC carrier gas applications, inert atmosphere glove boxes, and sample preparation workflows.
Key Features
- Imported Korean hollow-fiber membrane module ensures consistent 99% nitrogen purity with extended service life and zero consumable replacement requirements.
- Integrated oil-free scroll compressor with suspended acoustic isolation design maintains operational noise below 62 dB(A) at 1 m distance.
- Three-stage filtration system: pre-filter (particulates ≥5 µm), coalescing filter (oil aerosols <0.01 µm), and ultra-fine particulate filter (<0.01 µm, ≤0.003 mg/m³ total hydrocarbon content).
- Dual independent pressure regulation: upstream compression pressure control and downstream delivery pressure adjustment (0–0.6 MPa), both accessible via calibrated analog dials.
- Real-time digital nitrogen purity display (0–100% N₂ scale) with ±0.5% repeatability, calibrated against traceable reference standards.
- Onboard dew point monitoring capability (optional configuration); standard unit achieves typical dew points of –40°C to –50°C (ISO 8573-1 Class 3.2.2 compliant).
- Front-access service panel with tool-free filter cartridge replacement and visual desiccant indicator window.
Sample Compatibility & Compliance
The AYAN-20L is compatible with all standard laboratory gas interfaces (CGA-580, ISO 5145, BS 341-4) and integrates seamlessly into existing nitrogen-dependent instrumentation—such as gas chromatographs (GC), liquid chromatography–mass spectrometers (LC-MS) nitrogen curtain gas modules, FTIR purge lines, and thermal desorption units. Its membrane-based architecture inherently avoids introducing metallic contaminants, hydrocarbons, or reactive species that may compromise sensitive detectors. The unit conforms to IEC 61000-6-3 (EMC emission limits) and IEC 61000-6-2 (immunity requirements). While not certified to ISO/IEC 17025, its performance metrics align with ASTM D6349 (standard test method for nitrogen purity verification) and support GLP-compliant documentation when paired with validated calibration logs and maintenance records. No regulatory certification for medical or pharmaceutical-grade nitrogen (USP , EP 2.5.27) is claimed; users requiring >99.9% purity must select higher-tier models (e.g., AYAN-20LG).
Software & Data Management
The AYAN-20L operates as a standalone hardware system with no embedded firmware or network connectivity. All operational parameters—including flow rate, outlet pressure, purity reading, and runtime hours—are displayed locally via LED interface. For laboratories implementing electronic lab notebooks (ELN) or LIMS integration, analog 4–20 mA output signals are available (optional) for pressure and purity monitoring. Audit-ready maintenance logs—including filter replacement dates, membrane service intervals (recommended every 12,000 operating hours), and calibration certificate traceability—must be maintained manually per institutional SOPs. The device does not comply with FDA 21 CFR Part 11 due to absence of electronic signature or audit trail functionality; it is intended for research-use-only (RUO) applications where full digital compliance is not mandated.
Applications
- Carrier and make-up gas for capillary GC systems requiring stable, low-moisture nitrogen at 20 L/min flow.
- Inert blanketing during solvent evaporation, lyophilization, and reaction vessel purging.
- Zero-air generation support (when coupled with catalytic oxidizers) for ambient air monitoring calibrations.
- Gas supply for nitrogen-purged FTIR sample compartments and X-ray photoelectron spectroscopy (XPS) load locks.
- Cost-effective alternative to high-pressure nitrogen cylinders in multi-user core facilities with moderate daily demand (≤100 L/min aggregate).
FAQ
What is the expected service life of the Korean membrane module?
Under continuous operation at rated flow and inlet air quality meeting ISO 8573-1 Class 4.2.2 (dew point ≤3°C, oil ≤0.1 mg/m³), the membrane is rated for ≥12,000 hours (≈1.4 years). Field data indicates median service life of 18–24 months in controlled lab environments.
Does this unit require periodic electrolyte or desiccant replacement?
No. Unlike PSA or electrochemical generators, the AYAN-20L uses no electrolyte, KOH solution, or regenerative desiccants. Only the three-stage mechanical filters require replacement every 6–12 months depending on ambient air quality.
Can output pressure be regulated independently of flow rate?
Yes. The dual-pressure control system allows independent adjustment of compression stage pressure (to optimize membrane flux) and final delivery pressure (to match instrument inlet requirements), maintaining stable flow across varying backpressure conditions.
Is the nitrogen output suitable for LC-MS applications?
For nitrogen curtain gas or nebulizer assist in LC-MS, the 99% purity and –40°C dew point meet minimum specifications per Agilent and Waters application notes. However, for collision gas or high-sensitivity MRM assays, users should verify compatibility with their specific instrument manufacturer’s gas quality guidelines.
What maintenance documentation is provided with shipment?
Each unit ships with a factory calibration report (valid for 12 months), ISO 9001-certified manufacturing certificate, CE Declaration of Conformity, and a bilingual (English/Chinese) user manual containing torque specifications, filter part numbers, and troubleshooting flowcharts aligned with ISO/IEC 17020 inspection protocols.
