Anyan AYAN-5LG Membrane-Based Nitrogen Generator (99.9% Purity)

Overview

The Anyan AYAN-5LG is a compact, integrated membrane-based nitrogen generator engineered for continuous, on-demand supply of high-purity nitrogen gas (99.9%) in laboratory and light industrial environments. It employs hollow-fiber polymeric membrane technology—sourced from Korea—to separate nitrogen from compressed ambient air based on differential permeation rates of oxygen, water vapor, carbon dioxide, and nitrogen across the selective membrane surface. Under controlled feed pressure (0–0.6 MPa), oxygen and other fast-permeating gases diffuse preferentially through the membrane wall, while nitrogen—exhibiting lower solubility and diffusivity in the polymer matrix—is retained in the retentate stream. This physical separation mechanism eliminates the need for adsorbent beds, pressure-swing cycling, or chemical reagents, resulting in stable output within ≤3 minutes of startup and inherently low maintenance requirements.

Key Features

• Korean-sourced hollow-fiber membrane module with proven long-term stability and resistance to fouling—no consumable replacement required over typical service life
• Integrated oil-free scroll-type air compressor with acoustic suspension mounting, reducing operational noise to <55 dB(A) at 1 m distance
• Three-stage pre-filtration system: coalescing filter (removes liquid water and oil aerosols), activated carbon adsorber (eliminates hydrocarbon vapors), and ultrafine particulate filter (<0.01 µm retention, ≤0.003 mg/m³ oil carryover)
• Integrated refrigerated air dryer and desiccant-assisted dew point control, achieving consistent −40 °C pressure dew point (PDP) at rated flow
• Digital nitrogen purity monitor with real-time LED display (calibrated for 99.9% N₂ ±0.1% accuracy under steady-state conditions)
• Dual independent pressure regulation: upstream (feed air) and downstream (nitrogen outlet), each adjustable via precision needle valves for process compatibility
• Front-panel status indicators for power, compressor operation, filter saturation, and purity alarm thresholds

Sample Compatibility & Compliance

The AYAN-5LG delivers nitrogen suitable for inerting, carrier gas applications in GC and GC-MS, LC mobile phase blanking, sample preparation under inert atmosphere (e.g., moisture-sensitive synthesis, battery electrode drying), and instrument purge protocols. Its certified output meets ISO 8573-1:2010 Class 2:2:2 for solid particles, water, and oil contamination—ensuring compatibility with sensitive analytical instrumentation requiring clean, dry, oil-free nitrogen. While not validated per FDA 21 CFR Part 11, the unit supports GLP/GMP-aligned workflows when paired with external electronic log systems; its stable output profile enables reproducible method execution compliant with ASTM D6602 (for GC carrier gas qualification) and USP (for pharmaceutical inerting applications).

Software & Data Management

This model operates as a standalone hardware system without embedded firmware-based data logging or remote connectivity. All operational parameters—including outlet pressure, purity reading, and runtime hours—are monitored via analog/digital front-panel instrumentation. For laboratories requiring audit-ready records, integration with external data acquisition systems (e.g., LabVIEW, DeltaV, or custom SCADA) is supported via 4–20 mA analog output signals for purity and pressure, alongside dry-contact relay outputs for fault alarms (e.g., filter clogging, low purity, thermal overload). No proprietary software or cloud platform dependency is introduced—maintaining full IT infrastructure autonomy and cybersecurity compliance.

Applications

• Gas chromatography (GC) and GC-mass spectrometry (GC-MS) as carrier and make-up gas
• Inert atmosphere glove boxes and Schlenk lines for air-sensitive chemistry
• Electron microscopy (SEM/TEM) chamber purging and detector cooling
• Pharmaceutical stability testing chambers and lyophilizer backfilling
• Food packaging line blanketing and modified atmosphere processing (MAP)
• Calibration gas blending systems requiring stable, traceable nitrogen base gas
• Electronics manufacturing: solder paste stencil cleaning and component deoxidation

FAQ

What is the expected service life of the membrane module?
Under normal operating conditions (filtered, dry feed air; ambient temperature 15–30 °C; ≤80% RH), the Korean-sourced membrane typically maintains ≥99.9% purity output for 10,000–12,000 hours of cumulative operation.
Does this generator require periodic calibration?
The built-in purity sensor is factory-calibrated and does not require routine recalibration; however, users may verify accuracy annually using a traceable electrochemical or paramagnetic O₂ analyzer on the exhaust stream.
Can the unit be mounted in an enclosed cabinet?
Yes—provided minimum clearance of 10 cm on all sides and adequate ventilation to dissipate 1.0 kW of thermal load; ambient temperature must remain between 15–35 °C for stable dew point performance.
Is nitrogen purity affected by ambient temperature fluctuations?
Minor short-term variation (5 °C/hour); the system stabilizes within 90 seconds due to thermal mass design of the membrane housing and internal heat exchange geometry.
What maintenance intervals are recommended?
Pre-filters should be replaced every 6 months or after 4,000 operating hours—whichever occurs first; compressor oil (if applicable to specific revision) requires change every 2 years; no scheduled membrane servicing is specified per manufacturer guidelines.