SCIWAY NG4000 Split-Body Nitrogen Generator

Overview

The SCIWAY NG4000 Split-Body Nitrogen Generator is an engineered solution for continuous, on-demand high-purity nitrogen supply in analytical laboratories—specifically optimized for liquid chromatography–mass spectrometry (LC-MS) applications. It employs hollow-fiber membrane separation technology, where compressed air is passed across semi-permeable polymeric membranes that selectively permeate oxygen, water vapor, carbon dioxide, and trace hydrocarbons while retaining nitrogen molecules. This physical separation mechanism ensures stable, oil-free, and particle-free nitrogen output without cryogenic or chemical consumption. Unlike liquid nitrogen dewars or pressure swing adsorption (PSA) systems, the NG4000 delivers consistent 99.9% nitrogen purity at up to 140 L/min and 110 psi—meeting the stringent flow and pressure requirements of electrospray ionization (ESI) and atmospheric pressure chemical ionization (APCI) sources across major LC-MS platforms including Agilent 6400/6500 series, Waters Xevo TQ-S, Thermo Fisher Q Exactive, and Shimadzu Nexera LC-MS/MS systems.

Key Features

• Split-body architecture enables flexible installation: air compressor unit and nitrogen generation module can be placed separately—ideal for labs with space constraints or noise-sensitive environments.
• Integrated multi-stage purification train: includes coalescing pre-filter (0.01 µm), activated carbon adsorption bed (high-capacity, low-volatility), and proprietary nitrogen-selective membrane bundle sourced from certified German and Japanese suppliers.
• No external power required for nitrogen generation—only the upstream air compressor requires electrical input (standard 220 V AC, 50 Hz).
• Passive thermal management and vibration-damped mechanical design ensure silent operation (<45 dB(A)) and zero electromagnetic interference—critical near sensitive mass spectrometers.
• Rolling casters and compact footprint (W × D × H: 620 × 580 × 1,120 mm) support repositioning between instruments or shared lab use.
• Automated start-up/shutdown sequencing with real-time pressure monitoring and fail-safe shut-off valves compliant with ISO 8573-1 Class 2:2:2 for particulate, water, and oil content.

Sample Compatibility & Compliance

The NG4000 is validated for direct integration with LC-MS gas inlets requiring dry, hydrocarbon-free nitrogen at ≥99.9% purity and ≤−20 °C pressure dew point. Its output meets ASTM D6159-20 (Standard Specification for Nitrogen Used in Analytical Instrumentation) and aligns with ICH Q5C stability testing guidelines for inert gas blanketing. The system contains no phthalates, silicone oils, or volatile organic compounds—ensuring compatibility with high-sensitivity trace analysis and avoiding column contamination or background adduct formation. All wetted materials conform to USP Class VI biocompatibility standards; filter housings and membrane modules are CE-marked and RoHS-compliant. Documentation supports GLP/GMP audit readiness, including factory calibration certificates and component traceability logs.

Software & Data Management

While the NG4000 operates as a standalone hardware system without embedded firmware or touchscreen interface, it integrates seamlessly into laboratory infrastructure via analog pressure transducer outputs (4–20 mA) and digital dry-contact status signals (ready/fault). These enable connection to building management systems (BMS), centralized gas monitoring platforms (e.g., Siemens Desigo, Honeywell Experion), or instrument-specific control buses (e.g., Agilent LAN-based remote monitoring). Maintenance logs—including cumulative runtime, filter replacement timestamps, and pressure deviation alerts—can be recorded manually or imported into LIMS via CSV export from connected data loggers. Full compliance with FDA 21 CFR Part 11 is achievable when paired with validated electronic record systems meeting ALCOA+ principles.

Applications

• LC-MS mobile phase nebulization and desolvation gas supply
• GC-MS carrier gas backup or auxiliary purge gas
• Inert atmosphere maintenance for sample preparation workstations
• Nitrogen blanketing during solvent evaporation (e.g., SpeedVac concentrators)
• Calibration gas dilution systems requiring stable, low-moisture nitrogen base
• Long-term unattended operation in core facilities supporting multiple LC-MS instruments

FAQ

Does the NG4000 require electricity to generate nitrogen?
No—the nitrogen separation process is entirely pneumatic and passive. Only the upstream air compressor requires power input.
What maintenance is required, and how often?
Primary filter elements (coalescer and activated carbon) require replacement every 24–36 months under typical lab usage (8 hrs/day, 5 days/week); total maintenance time is approximately 30 minutes per service cycle.
Can the NG4000 support multiple LC-MS instruments simultaneously?
Yes—when configured with appropriate pressure-regulated distribution manifolds and stainless-steel gas lines, it reliably serves up to three mid-throughput LC-MS systems operating concurrently.
Is the nitrogen output compatible with high-resolution mass spectrometers?
Yes—verified performance includes sustained 99.9% purity, −20 °C dew point, and <0.01 µm particulate removal, satisfying the gas quality thresholds specified by Thermo Fisher Orbitrap and Waters Synapt G2-Si platforms.
Does SCIWAY offer custom configurations for non-standard flow or purity requirements?
Yes—OEM engineering services include tailored membrane stack sizing, integrated dew point monitoring, and dual-pressure outlet variants (e.g., 30 psi + 110 psi) for hybrid LC-GC-MS labs.