AYAN AYAN-500MLG High-Purity Nitrogen Generator

Overview

The AYAN AYAN-500MLG High-Purity Nitrogen Generator is an electrolytic nitrogen generation system engineered for continuous, on-demand supply of ultra-high-purity nitrogen gas (99.999%) in analytical laboratories and research environments. Unlike pressure swing adsorption (PSA) or membrane-based systems, this generator employs a proprietary aqueous alkaline electrolyte cell to electrochemically dissociate water into oxygen and hydrogen; nitrogen is then purified from ambient air via a dual-stage process combining selective catalytic oxidation of residual oxygen and deep desiccation. The core electrolysis module uses platinum-group metal catalysts to ensure long-term electrode stability and minimal voltage drift over extended operation. This design eliminates reliance on high-pressure cylinders—reducing safety hazards, storage constraints, and logistical overhead—while delivering consistent flow and purity under variable demand conditions typical of GC carrier gas, LC-MS purge gas, or inert atmosphere glovebox applications.

Key Features

• Electrolytic generation architecture with sealed alkaline electrolyte cell, enabling stable 500 mL/min output without consumable molecular sieves or frequent filter replacements.
• Dual-stage purification: catalytic oxygen scavenging followed by integrated desiccant beds achieving −40 °C dew point and ≤0.1 ppm O₂ residual.
• Microprocessor-controlled operation with real-time digital display of flow rate, system pressure, electrolyte level, and operational status codes.
• Embedded buffer tank with ASME-certified safety relief valve (ISO 4126-1 compliant), ensuring pressure stabilization during transient demand spikes and safe shutdown protocols.
• Modular chassis design with industrial-grade aluminum housing, IP20-rated enclosure, and four locking swivel casters for repositioning within shared lab spaces.
• Self-diagnostic firmware that monitors electrolyte conductivity, cell temperature, and gas purity indicators—triggering audible alerts and on-screen fault codes per IEC 61508 functional safety guidelines.

Sample Compatibility & Compliance

The AYAN-500MLG is compatible with all standard 1/4″–3/8″ stainless steel or PTFE gas lines and integrates seamlessly with GC, GC-MS, FTIR, and thermal analysis instrumentation requiring Class 5.0 (ISO 8573-1:2010) nitrogen. Its output meets ASTM D6373 specifications for high-purity inert gases used in chromatographic carrier applications. While not certified to FDA 21 CFR Part 11 out-of-the-box, the device supports audit-ready log export via RS232 interface for GLP/GMP-aligned environments when paired with validated third-party data acquisition software. All electrical components conform to CE EN 61010-1 safety standards for laboratory equipment.

Software & Data Management

The unit operates autonomously without external PC dependency. All operational parameters—including cumulative runtime, total gas volume delivered, and diagnostic event timestamps—are stored in non-volatile memory. An optional RS232 serial port enables integration with LIMS or SCADA platforms for remote monitoring and periodic CSV log extraction. Firmware updates are performed via secure UART bootloader; no cloud connectivity or proprietary drivers are required. Data retention supports ≥12 months of minute-resolution operational history, facilitating preventive maintenance scheduling and regulatory traceability.

Applications

• Carrier gas supply for capillary gas chromatography (GC) and gas chromatography–mass spectrometry (GC-MS) systems requiring consistent 500 mL/min at ≤0.1 psi backpressure variation.
• Purge and blanket gas for liquid chromatography–mass spectrometry (LC-MS) source compartments and electrospray ionization (ESI) interfaces.
• Inert atmosphere generation for moisture-sensitive synthesis, catalyst handling, and battery material testing in gloveboxes or sealed reactors.
• Reference gas for calibration of oxygen analyzers and trace moisture sensors in quality control labs.
• Replacement for dewar-based liquid nitrogen in cryogenic sample storage pre-cooling where moderate flow and ultra-dry gas are prioritized over sub-ambient temperatures.

FAQ

What electrolyte solution is used, and how often does it require replenishment?
The system utilizes a potassium hydroxide (KOH)-based aqueous electrolyte. Under normal operation (8 h/day, 5 days/week), refilling is required every 6–8 months; an onboard conductivity sensor triggers a visual alert when concentration falls below optimal range.
Does the generator require compressed air or external cooling?
No—this is a self-contained electrolytic system requiring only a stable 220 V AC power supply (±10%) and ambient air intake. No external air compressor, chiller, or ventilation ducting is needed.
Can the output be connected directly to a GC with electronic pneumatic control (EPC)?
Yes—the regulated outlet maintains ±0.5 psi pressure stability across the full 0–500 mL/min range, fully compatible with Agilent, Thermo Fisher, and Shimadzu EPC modules when configured with standard SAE J1962-compliant fittings.
Is routine maintenance limited to electrolyte replacement?
In addition to electrolyte top-up, annual inspection of the catalytic converter bed and desiccant cartridge is recommended; both are field-replaceable as modular assemblies with documented torque specifications and leak-test procedures included in the service manual.