CEH300 High-Purity Hydrogen Gas Generator by Chineasy

Overview

The CEH300 High-Purity Hydrogen Gas Generator is an on-demand, membrane-based electrolytic hydrogen source engineered for analytical laboratory applications requiring consistent, ultra-high-purity hydrogen gas. Designed specifically to serve as fuel gas for Flame Ionization Detectors (FID) and carrier gas for Thermal Conductivity Detectors (TCD) in gas chromatography (GC) systems, the CEH300 eliminates reliance on high-pressure hydrogen cylinders—reducing safety hazards, logistical overhead, and operational downtime. Its core technology employs a proton exchange membrane (PEM) electrolyzer stack, which splits deionized water into high-purity H₂ and O₂ gases via electrochemical decomposition. Oxygen is safely vented, while hydrogen undergoes multi-stage purification—including palladium-doped molecular sieve drying and catalytic recombination of trace oxygen—to achieve ≥99.999% purity (residual O₂ < 1 ppm, H₂O < 1 ppm, total hydrocarbons < 0.1 ppm). The generator operates with zero moving parts in the gas path, ensuring long-term stability and minimal maintenance.

Key Features

• Ultra-high-purity hydrogen output (≥99.999%) compliant with ASTM D7217 and ISO 8573-1 Class 1 for gaseous impurities
• Adjustable flow control from 0 to 300 mL/min with digital precision regulation and real-time flow feedback
• Stable pressure delivery up to 0.4 MPa (4 bar), compatible with standard GC inlet modules and detector interfaces
• Integrated water level monitoring, overpressure protection, and automatic shutdown upon low water or system fault
• Compact benchtop footprint (380 × 180 × 360 mm) optimized for shared lab environments and GC instrument carts
• Low power draw (≤120 W) and silent operation—no external cooling or ventilation required
• Self-contained design with built-in DI water reservoir (1.2 L capacity); refill interval ≈ 10–14 days at 200 mL/min continuous output

Sample Compatibility & Compliance

The CEH300 is fully compatible with all major GC platforms requiring hydrogen as fuel or carrier gas—including Agilent, Thermo Fisher, Shimadzu, PerkinElmer, and Waters systems. It meets essential regulatory expectations for routine QC/QA laboratories operating under GLP and GMP frameworks. While not certified to FDA 21 CFR Part 11 out-of-the-box, its operational logs (flow, pressure, runtime, error codes) are timestamped and exportable via USB for audit-ready documentation. The unit complies with IEC 61010-1 for electrical safety and EN 60079-0 for non-hazardous area classification. Hydrogen purity data is traceable to NIST-traceable calibration standards used during factory verification.

Software & Data Management

The CEH300 features an embedded microcontroller with LED status interface—no proprietary software or PC connection required for basic operation. All critical parameters (output flow, system pressure, water level, temperature, fault codes) are displayed on a dual-line LCD screen. For integration into centralized lab infrastructure, optional RS-232 or analog 0–5 V output signals enable connection to building management systems (BMS) or SCADA platforms for remote monitoring. Event logs—including startup/shutdown cycles, alarm triggers, and maintenance alerts—are stored internally for up to 30 days and retrievable via USB flash drive in CSV format.

Applications

• Fuel gas supply for FID in environmental, petrochemical, and pharmaceutical GC analysis
• Carrier gas alternative to helium in TCD-based residual solvent testing (e.g., USP <467>)
• Hydrogen source for portable GC-MS field deployments where cylinder logistics are prohibitive
• Lab-scale hydrogen feed for catalytic reaction screening and hydrotreatment studies
• Backup or primary H₂ source in ISO/IEC 17025-accredited testing laboratories seeking improved gas supply continuity

FAQ

What is the minimum water quality requirement for the CEH300?

Deionized water with resistivity ≥15 MΩ·cm and total organic carbon (TOC) < 50 ppb is required. Use of tap or distilled water will damage the PEM stack and void warranty.
Can the CEH300 be used as a carrier gas for capillary GC columns?

Yes—when operated within its specified pressure and flow range, it delivers stable, pulse-free hydrogen suitable for both packed and fused-silica capillary columns.
Does the generator require annual recalibration?

No scheduled recalibration is needed; however, users should verify hydrogen purity annually using a dedicated gas purity analyzer or third-party lab test per ISO 8573-1 Annex B.
Is the CEH300 compatible with hydrogen-air flame photometric detectors (FPD)?

Yes—its consistent flow and purity profile support stable FPD operation when paired with a separate air compressor meeting GC-grade specifications.
What maintenance is required beyond water refills?

Annual inspection of the water filter cartridge and visual check of the PEM stack housing seals are recommended. No consumables other than DI water are required under normal operating conditions.