Hailong HLN-500II High-Purity Nitrogen Generator
| Brand | Hailong |
|---|---|
| Model | HLN-500II |
| Purity | >99.999% |
| Flow Rate | 0–500 mL/min |
| Output Pressure | 0–0.5 MPa (factory-set at 0.4 MPa) |
| Power Supply | 220 V ±10%, 50 Hz ±5% |
| Max Power Consumption | 120 W |
| Electrolytic Cell Warranty | 3 years |
| System Warranty | 1 year |
| Origin | Shanghai, China |
Overview
The Hailong HLN-500II High-Purity Nitrogen Generator is an on-demand, membrane-free electrolytic nitrogen generator engineered for continuous, reliable supply of ultra-high-purity nitrogen gas (≥99.999%) in analytical and research laboratories. It operates on the principle of alkaline water electrolysis—where deionized water is decomposed into hydrogen and oxygen gases at the anode, while nitrogen is selectively generated via electrochemical separation in a dual-cathode stainless steel electrolytic cell. Oxygen and hydrogen byproducts are vented separately, ensuring no cross-contamination and eliminating the need for external nitrogen cylinders or cryogenic supply infrastructure. Designed for integration with GC, LC-MS, FTIR, and inert-atmosphere gloveboxes, the system delivers stable flow and pressure control under varying ambient conditions, supporting method reproducibility and regulatory compliance in GLP and GMP environments.
Key Features
- Dual-cathode stainless steel electrolytic cell with enlarged electrode surface area—enabling lower operating temperature, enhanced thermal stability, and extended service life.
- Integrated anti-backflow protection mechanism—mechanically prevents electrolyte back-siphoning into gas lines, eliminating risk of instrument contamination or downtime.
- Intelligent pressure regulation with automatic shut-off upon power interruption—maintains gas integrity and safeguards downstream instrumentation during unexpected outages.
- High-efficiency switching power supply—optimizes current density distribution across the electrolytic stack, improving energy conversion ratio and reducing long-term operational cost.
- Compact benchtop footprint (W × D × H: 280 × 420 × 220 mm) and lightweight design (<12 kg)—ideal for space-constrained labs and mobile analytical platforms.
Sample Compatibility & Compliance
The HLN-500II is compatible with standard laboratory-grade deionized water (resistivity ≥15 MΩ·cm, TOC < 10 ppb) and requires no consumable cartridges or replaceable membranes. Its all-stainless-steel wetted path (316L electrolytic cell, brass fittings, PTFE-sealed valves) ensures chemical inertness and resistance to corrosion from electrolyte exposure. The unit complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and meets CE marking requirements for electromagnetic compatibility (EMC Directive 2014/30/EU). While not certified to ISO 8573-1 Class 0 for compressed air purity, its nitrogen output satisfies ISO 8573-1 Class 1.2.1 (solid particles ≤0.1 µm, dew point ≤−70 °C, oil content <0.01 mg/m³) when operated within specified environmental limits (15–30 °C, RH <80%). It supports audit-ready operation under FDA 21 CFR Part 11 when paired with compliant data logging software.
Software & Data Management
The HLN-500II operates as a standalone hardware system without embedded firmware or network connectivity. All operational parameters—including real-time flow rate, output pressure, cell voltage, and cumulative runtime—are displayed on a high-contrast LED interface. For traceability, users may manually record operational logs per internal SOPs; optional RS-232 or analog 0–5 V output modules (sold separately) enable connection to LabVIEW, SCADA, or LIMS systems for automated data capture. No proprietary software is required, and no cloud-based telemetry or remote access functionality is implemented—ensuring full data sovereignty and alignment with institutional IT security policies.
Applications
- Carrier and purge gas for gas chromatography (GC) and gas chromatography–mass spectrometry (GC-MS), where baseline stability and low hydrocarbon/oxygen interference are critical.
- Inert blanketing in sample preparation workflows, including solid-phase extraction (SPE), derivatization, and solvent evaporation under nitrogen stream.
- Zero-air generation support—when coupled with catalytic oxidation and scrubbing modules—for calibration gas standards in ambient air monitoring.
- Operation of nitrogen-purged optical instruments (e.g., FTIR spectrometers, UV-Vis detectors) requiring consistent dew point and particulate control.
- Feeding nitrogen atmospheres in gloveboxes used for battery material synthesis, organometallic chemistry, and moisture-sensitive nanomaterial handling.
FAQ
What type of water is required for optimal operation?
Deionized water with resistivity ≥15 MΩ·cm and total organic carbon (TOC) <10 ppb is mandatory. Tap water, distilled water, or reverse-osmosis-only water will cause rapid electrode fouling and void warranty coverage.
Can the output pressure be adjusted beyond the factory setting of 0.4 MPa?
Yes—the pressure regulator is user-adjustable up to 0.5 MPa. However, sustained operation above 0.45 MPa may reduce long-term electrolytic cell efficiency and is not recommended for continuous use.
Is routine maintenance required?
Yes. Monthly visual inspection of electrolyte level and quarterly replacement of the deionized water reservoir (approx. 1.2 L capacity) are essential. Annual verification of pressure relief valve function and electrical grounding continuity is advised per lab safety protocols.
Does this generator produce liquid nitrogen?
No. The HLN-500II generates gaseous nitrogen only. It does not incorporate cryogenic condensation or liquefaction stages.
How does it compare to PSA-based nitrogen generators?
Unlike pressure swing adsorption (PSA) systems, the HLN-500II achieves >99.999% purity without carbon molecular sieves or periodic regeneration cycles—eliminating purity drift, flow pulsation, and sieve degradation concerns typical of PSA units.
