ChemTron RACK-PG Plus Cabinet-Mounted High-Purity Hydrogen Generator

Overview

The ChemTron RACK-PG Plus is a cabinet-mounted, high-purity hydrogen generator engineered for continuous, safe, and maintenance-free operation in analytical laboratories. It employs catalyzed proton exchange membrane (CPEM) electrolysis—using only deionized water as feedstock—to generate ultra-high-purity hydrogen at up to 11 bar (160 psig) output pressure. Unlike traditional alkaline electrolyzers, the RACK-PG Plus eliminates corrosive KOH solutions and regenerative desiccants, relying instead on solid-state electrochemical architecture and passive membrane-based drying. Its design conforms strictly to 19-inch EIA-310-D rack standards, enabling seamless integration into centralized gas supply systems, GC/MS instrument racks, or ICP-MS support cabinets. With internal hydrogen inventory limited to <50 mL—well below the 4% lower explosive limit (LEL) threshold—the system inherently complies with IEC 60079-10-1 zone classification requirements for non-hazardous locations. The generator is purpose-built for applications demanding long-term stability, trace-level impurity control, and regulatory-compliant gas sourcing—including GC/FID/TCD carrier and fuel gas, GC-MS combustion gas, FAST-GC, ICP-MS hydrogen reaction gas, hydrogenation reactors, and PEM fuel cell test benches.

Key Features

• True high-purity hydrogen generation: 99.9996% purity certified per ISO 8573-1 Class 1 (solid particles), Class 2 (water), and Class 1 (oil); optional 99.99996% grade available with dual cold-regenerative purification
• CPEM electrolyzer core featuring platinum- and platinum-iridium-coated polymer membranes and high-purity titanium CCELL® electrolytic cell housing—eliminating metallic leaching and catalytic interference
• Static membrane drying technology (Stage II) coupled with optional dual-stage cold-regenerative purifier (RACK-NM variant) for O₂, N₂, H₂O, and total hydrocarbon removal down to sub-ppb levels
• Real-time multi-parameter monitoring: CCELL voltage/current, electrolyte temperature, water tank level/conductivity, outlet pressure, seismic/vibration events, and overpressure protection
• Rack-integrated architecture with automatic water replenishment capability via optional rack-mount reservoir; supports 24/7 unattended operation
• Comprehensive safety architecture: dual leak detection (internal pressure decay + external flow loss), low-water cutoff, high-conductivity shutdown, and fail-safe venting
• Energy-efficient operation: power draw ranges from 65 W (RACK-PG 100 Plus) to 250 W (RACK-PG 600 Plus), with thermal load minimized by zero-waste electrolysis and no exothermic side reactions

Sample Compatibility & Compliance

The RACK-PG Plus delivers hydrogen compliant with ASTM D6866-22 (for isotopic integrity in tracer studies), USP and environmental control prerequisites, and ISO/IEC 17025 clause 5.9.1 for gas purity traceability in accredited testing labs. Its inert titanium cell body and platinum-group catalysts ensure compatibility with ultra-trace analysis workflows—particularly in fragrance chemistry, pharmaceutical residual solvent testing, and environmental VOC profiling—where background interference from transition metals or organic volatiles must be excluded. All models meet CE Machinery Directive 2006/42/EC, EMC Directive 2014/30/EU, Low Voltage Directive 2014/35/EU, and carry CSA C22.2 No. 61010-1 certification for North American deployment. Firmware and hardware architecture support audit-ready data logging aligned with FDA 21 CFR Part 11 requirements when paired with optional PC software.

Software & Data Management

• Integrated 128×64-pixel LCD with tactile keypad enables local configuration of pressure setpoints, alarm thresholds, and runtime diagnostics without external tools
• Optional PC-based control software provides remote monitoring of real-time parameters (pressure, flow, conductivity, temperature), event logging with timestamped alarms, and configurable email/SNMP notifications
• Cascade Control Module (optional add-on) enables synchronized operation of up to 8 RACK-PG units: automatic load balancing, fault-tolerant flow redistribution, and centralized status dashboard
• Firmware updates delivered free-of-charge for product lifetime; version history and validation reports available upon request for GLP/GMP environments
• Data export in CSV format compatible with LIMS integration; all logs retain cryptographic integrity and are stored onboard with >12 months retention capacity

Applications

The RACK-PG Plus serves as a primary hydrogen source across mission-critical analytical and industrial applications. In gas chromatography, it supplies stable carrier gas for capillary columns and stoichiometric fuel for flame ionization detectors—eliminating baseline drift caused by cylinder-to-cylinder variability. For GC-MS systems operating in electron ionization (EI) or chemical ionization (CI) modes, its consistent purity prevents filament oxidation and extends source lifetime. In ICP-MS laboratories, the generator provides reactive hydrogen gas for collision/reaction cell chemistry (e.g., reducing ArO⁺ interferences in Fe analysis). Its low-particulate, metal-free output is equally suited for catalytic hydrogenation screening in medicinal chemistry, PEM fuel cell polarization curve testing, and semiconductor process gas qualification where oxygen and moisture residuals must remain below 10 ppb.

FAQ

Does the RACK-PG Plus require electrolyte addition or desiccant replacement?
No. It uses only deionized water as input and relies on solid polymer electrolyte membranes and static drying membranes—no KOH, no silica gel, no periodic consumables.
Can it be integrated into an existing 19-inch instrumentation rack alongside GC systems?
Yes. Its mechanical footprint, mounting holes, and rear-panel cable routing are fully compliant with EIA-310-D rack standards and designed for direct bolt-in installation.
What water quality is required for optimal performance and longevity?
Deionized water with resistivity ≥1 MΩ·cm is mandatory; ≥5 MΩ·cm is strongly recommended to minimize scaling and extend CCELL membrane life beyond 10,000 operational hours.
How does the system handle failure scenarios such as water depletion or pressure loss?
It implements layered safety logic: low-level detection halts electrolysis within 3 seconds; pressure decay triggers audible/visual alarms and initiates controlled depressurization; external leak detection activates flow compensation in cascade mode.
Is the hydrogen output suitable for use with sensitive mass spectrometry detectors?
Yes. Certified 99.9996% purity includes <100 ppb O₂, <50 ppb H₂O, and <10 ppb total hydrocarbons—meeting ASTM D7622-21 specifications for MS-grade hydrogen.