NA-300 Integrated Nitrogen & Zero-Air Generator
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (PRC) |
| Model | NA-300 |
| Pricing | Available Upon Request |
| Nitrogen Purity | <3 ppm O₂, Dew Point −56 °C |
| Nitrogen Flow Rate | 0–300 mL/min |
| Nitrogen Output Pressure | 0.4 MPa |
| Zero-Air Flow Rate | 0–2000 mL/min |
| Zero-Air Output Pressure | 0.4 MPa |
| Power Consumption | 275 W |
| Dimensions (W×D×H) | 470 × 260 × 380 mm |
| Net Weight | ~28 kg |
Overview
The NA-300 Integrated Nitrogen & Zero-Air Generator is an engineered solution for laboratories requiring high-purity, on-demand nitrogen and instrument-grade zero-air—two critical carrier and detector gases for gas chromatography (GC), GC–MS, and related analytical platforms. Unlike conventional cylinder-based supply systems, the NA-300 employs membrane separation and catalytic purification technologies to generate nitrogen from compressed air, while simultaneously producing zero-air via deep desiccation and catalytic hydrocarbon oxidation. The nitrogen stream achieves residual oxygen ≤3 ppm and a dew point of −56 °C—meeting ASTM D6866 and ISO 8573-1 Class 2.2.1 requirements for trace-level analysis. The zero-air output contains <0.1 ppm total hydrocarbons (as methane), <0.05 ppm CO, and <0.1 ppm CO₂—compliant with EPA Method TO-14/TO-15 specifications for environmental VOC analysis. Designed for continuous unattended operation, the unit integrates seamlessly into modern GC workflows without introducing sulfur compounds or alkaline contaminants that compromise FID, ECD, or TCD detector performance.
Key Features
- Stainless-steel integrated gas storage tank with triple-stage filtration: particulate, coalescing, and catalytic oxygen scavenging—ensuring long-term stability of nitrogen purity.
- Silicone-rubber-free sealing system: all wetted seals utilize low-sulfur fluorocarbon elastomers (e.g., Viton®), eliminating sulfur contamination risks for sulfur-sensitive detectors (e.g., PFPD, SCD).
- Intelligent nitrogen flow tracking: real-time pressure-compensated flow control maintains setpoint accuracy across variable backpressure conditions typical in split/splitless injectors and multi-detector configurations.
- Zero-air subsystem with auto-drain condensate trap and precision pressure regulation (±0.01 MPa), minimizing baseline drift during extended temperature-programmed runs.
- Comprehensive safety architecture: overtemperature cutoff, pressure relief valves, leak detection logic, and automatic shutdown upon filter saturation or abnormal current draw.
- Compact benchtop footprint (470 × 260 × 380 mm) with front-access service panels—optimized for shared lab environments and mobile GC carts.
Sample Compatibility & Compliance
The NA-300 is vendor-agnostic and fully compatible with all major GC platforms—including Agilent, Thermo Fisher Scientific, Shimadzu, PerkinElmer, and Waters—regardless of injector type (PTV, on-column, cold-on-column), detector configuration (FID, TCD, ECD, NPD, FPD), or data system (OpenLab, Chromeleon, GCsolution). It meets essential regulatory prerequisites for GLP and GMP environments: built-in audit trail logging (time-stamped operational events), password-protected parameter access, and compliance-ready documentation packages (IQ/OQ templates available upon request). Gas outputs conform to USP , EP 2.2.43, and ISO/IEC 17025 clause 5.9.1 for gas purity verification protocols. No external calibration gases are required for routine operation; annual verification may be performed using certified gas standards traceable to NIST SRMs.
Software & Data Management
While the NA-300 operates as a standalone hardware system with intuitive LED interface and tactile push-button controls, it supports optional RS-232 or USB-to-serial connectivity for integration into centralized lab infrastructure. A dedicated Windows-based utility enables remote monitoring of real-time parameters (N₂ flow, air pressure, internal temperature, filter life estimate), event log export (CSV), and firmware updates. All operational data—including startup/shutdown timestamps, pressure excursions, and fault codes—are retained onboard for ≥30 days and comply with FDA 21 CFR Part 11 requirements when paired with validated electronic signature modules. Audit trails are immutable and exportable for regulatory inspection readiness.
Applications
- Routine QC testing in pharmaceutical manufacturing (residual solvent analysis per ICH Q2(R2)).
- Environmental monitoring labs performing EPA SW-846 Methods 8260/8270 on soil, water, and air matrices.
- Food safety labs conducting fatty acid methyl ester (FAME) profiling and pesticide residue screening.
- Academic research facilities requiring stable, low-cost gas supply for method development and validation studies.
- Forensic toxicology labs supporting blood alcohol and drug metabolite quantification by headspace-GC/FID.
FAQ
Does the NA-300 require external compressed air input?
Yes—it must be connected to a clean, oil-free compressed air source delivering 0.6–0.8 MPa at ≥30 L/min. An integrated air dryer or external coalescing filter is recommended if inlet air exceeds ISO 8573-1 Class 4.2.3.
How often must the oxygen scavenger and hydrocarbon catalyst be replaced?
Under typical usage (24/7 operation at 200 mL/min N₂ + 1500 mL/min air), replacement intervals are 12–18 months. The unit displays a maintenance alert 30 days prior to scheduled service.
Can the NA-300 support multiple GC instruments simultaneously?
Yes—when configured with optional manifold kits and pressure-regulated distribution panels, it reliably serves up to three GC systems with independent flow control per outlet.
Is the nitrogen output suitable for LC–MS nitrogen drying gas?
No—the NA-300 is optimized for GC applications. For LC–MS, a dedicated high-flow, ultra-high-purity nitrogen generator (≥30 L/min, <0.1 ppm O₂, −70 °C dew point) is required.
