Anyan AYAN-1LG Membrane-Based High-Purity Nitrogen Generator (99.9% N₂)

Overview

The Anyan AYAN-1LG is a compact, integrated membrane-based nitrogen generator engineered for continuous, on-demand supply of high-purity nitrogen (99.9% N₂) in laboratory and light industrial settings. It employs selective permeation through asymmetric polymeric hollow-fiber membranes—sourced from South Korea—to separate nitrogen from compressed ambient air. This process exploits differences in gas solubility and diffusivity across the membrane material: oxygen, water vapor, and CO₂ exhibit higher permeation rates than nitrogen under applied pressure (typically 0.6–0.8 MPa), enabling their preferential removal through the membrane’s permeate side while nitrogen is retained and collected as the retentate stream. Unlike pressure swing adsorption (PSA) systems, the AYAN-1LG operates without molecular sieves, valves, or cyclic regeneration steps—eliminating mechanical wear, pressure surges, and purity fluctuations during startup. Its stable output reaches specification-grade purity within ≤3 minutes of power-on, making it suitable for applications requiring rapid, repeatable gas delivery without warm-up delays.

Key Features

• Korean-sourced high-selectivity hollow-fiber membrane module, delivering consistent 99.9% N₂ purity with demonstrated operational stability exceeding 15,000 hours
• Integrated oil-free scroll air compressor with acoustic suspension mounting, reducing operational noise to <52 dB(A) at 1 m distance
• Three-stage pre-filtration system: coalescing filter (0.01 µm particulate retention), activated carbon adsorber (hydrocarbon and odor removal), and desiccant dryer (achieving −40 °C pressure dew point)
• Digital front-panel display showing real-time nitrogen purity (% N₂), outlet pressure (MPa), and flow rate (L/min), calibrated per ISO/IEC 17025 traceable protocols
• Dual independent pressure regulation: primary stage controls feed air pressure to the membrane; secondary stage fine-tunes nitrogen delivery pressure (0–0.6 MPa) for instrument compatibility
• No consumables required; membrane replacement not scheduled—only performed upon verified performance decay per ASTM D6358 verification protocol

Sample Compatibility & Compliance

The AYAN-1LG supplies nitrogen meeting ISO 8573-1:2010 Class 2:2:2 specifications (solid particles ≤0.1 µm, dew point ≤−40 °C, oil content ≤0.003 mg/m³). Its output is compatible with gas chromatography (GC), liquid chromatography–mass spectrometry (LC-MS) nitrogen curtain gas, glove box purging, sample preparation inerting, and FTIR purge applications. The unit complies with CE electromagnetic compatibility (EMC) Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. While not certified to FDA 21 CFR Part 11, its digital logging interface supports third-party audit-ready data export (CSV/Excel) for GLP/GMP-aligned laboratories. All internal wetted materials—including stainless steel 316L tubing and EPDM diaphragms—meet USP Class VI biocompatibility standards.

Software & Data Management

The AYAN-1LG features embedded firmware with non-volatile memory for storing up to 30 days of operational logs, including cumulative runtime, average purity deviation (<±0.1%), and pressure/flow trend snapshots (recorded every 5 minutes). Data export is supported via USB-C port using vendor-neutral CSV format. Optional RS-485 Modbus RTU interface enables integration into centralized lab infrastructure monitoring systems (e.g., LabVantage, Thermo Fisher SampleManager). No cloud connectivity or proprietary software installation is required—configuration remains fully local and auditable.

Applications

• GC carrier and detector make-up gas (compatible with FID, TCD, ECD)
• LC-MS nitrogen curtain and nebulizer gas (validated for Waters, Agilent, and Thermo instruments)
• Inert atmosphere maintenance in analytical balances, moisture analyzers, and thermal gravimetric analyzers (TGA)
• Blanketing of solvent storage vessels and reagent dispensing workstations
• Purging of optical chambers in UV-Vis and Raman spectrometers
• Calibration gas dilution systems requiring stable, low-oxygen background gas

FAQ

What is the expected service life of the membrane module?
Under continuous operation at rated flow and inlet air quality meeting ISO 8573-1 Class 2, the membrane exhibits no scheduled replacement interval; field data indicate median functional longevity of 15,000–18,000 hours.
Can the unit operate continuously 24/7?
Yes—the AYAN-1LG is rated for uninterrupted duty cycle; thermal management includes passive finned heat sinks and intelligent fan control synchronized with load demand.
Is external cooling water required?
No—heat dissipation is entirely air-cooled; ambient operating temperature range is 5–35 °C with ≤80% non-condensing relative humidity.
How is nitrogen purity verified and calibrated?
Purity sensing uses dual-beam electrochemical oxygen detection (0–1,000 ppm O₂ range, ±2% FS accuracy); factory calibration is traceable to NIST SRM 2622; user recalibration is accessible via secure service menu.
Does the generator meet regulatory requirements for pharmaceutical QC labs?
While not intrinsically 21 CFR Part 11 compliant, its audit trail capabilities, electronic signature support (via optional password-protected admin mode), and configurable alarm thresholds align with Annex 11 and ICH Q7 data integrity expectations when deployed within validated lab workflows.