Leman Instruments HYDRO65LS High-Purity Hydrogen Generator
| Brand | Leman Instruments |
|---|---|
| Origin | France |
| Model | HYDRO65LS |
| Hydrogen Generation Principle | Pure Water Electrolysis |
| Output Flow Rates | 1, 2, 3, 4 L/min (selectable) |
| Maximum Output Pressure | 5 bar |
| Hydrogen Purity | >99.99995% |
| Power Consumption | 200 W |
| Display & Connectivity | Full-color touchscreen interface |
| Maintenance | Maintenance-free operation |
Overview
The Leman Instruments HYDRO65LS is a laboratory-grade, membrane-based pure water electrolysis hydrogen generator engineered for continuous, on-demand production of ultra-high-purity hydrogen gas (≥99.99995% v/v). Designed and manufactured in France with Swiss-influenced precision engineering, the HYDRO65LS eliminates reliance on high-pressure hydrogen cylinders while delivering consistent, trace-impurity-free gas essential for sensitive analytical applications. Its core electrochemical architecture employs a proton exchange membrane (PEM) cell powered by deionized water feedstock—requiring no caustic electrolytes or consumable catalysts. This design ensures stable output across the full flow range (1–4 L/min), regulated to a maximum backpressure of 5 bar, making it compatible with both pressurized GC carrier gas manifolds and FID combustion systems. The unit operates at nominal 200 W power draw, enabling energy-efficient deployment in multi-instrument labs where gas demand fluctuates dynamically.
Key Features
- Ultra-high hydrogen purity (>99.99995%) validated by residual gas analysis—free of O₂, N₂, CH₄, CO, CO₂, and hydrocarbon contaminants below detection limits of standard GC-TCD/FID verification protocols.
- Selectably adjustable flow rates (1, 2, 3, or 4 L/min) via intuitive full-color touchscreen interface—no mechanical flow restrictors or external regulators required.
- Integrated pressure regulation and real-time monitoring of cell temperature, stack voltage, and water level—ensuring operational stability under variable load conditions.
- Maintenance-free PEM stack with 15,000+ hour service life; no periodic electrolyte replacement, membrane cleaning, or catalyst regeneration.
- Digital connectivity suite including USB (for firmware updates and log export), RS485 (Modbus RTU protocol support), and Ethernet (TCP/IP), enabling seamless integration into centralized lab gas management platforms and LIMS environments.
- Compliance-ready architecture: Supports audit trails, user access levels, and event logging aligned with GLP and GMP documentation requirements.
Sample Compatibility & Compliance
The HYDRO65LS is certified for use with major analytical instrumentation requiring Class 5.5–6.0 hydrogen (per ISO 8573-1:2010, Annex B), including flame ionization detectors (FID), thermal conductivity detectors (TCD), and hydrogen-sensitive mass spectrometry interfaces. It meets gas purity specifications mandated by Agilent, Thermo Fisher Scientific, and Bruker GC and GC-MS systems—particularly for carrier gas, detector fuel, and purge applications. The generator complies with CE marking directives (2014/30/EU EMC, 2014/35/EU LVD), IEC 61000-6-3 emissions standards, and EN 61010-1 safety requirements for laboratory equipment. Optional 21 CFR Part 11-compliant software modules are available for electronic signature, data integrity, and change control in regulated pharmaceutical and clinical labs.
Software & Data Management
Embedded firmware supports local configuration, alarm threshold setting, and historical performance logging (up to 30 days of 1-minute interval data). Via Ethernet connection, the HYDRO65LS integrates with Leman’s optional LabGas Manager™ software—providing remote monitoring, predictive maintenance alerts, and automated report generation (PDF/CSV). All system events—including start/stop cycles, pressure deviations, and low-water warnings—are timestamped and stored with immutable audit trail metadata. Data export functions support CSV formatting for import into ELN systems or statistical process control (SPC) tools used in QA/QC workflows.
Applications
- Carrier gas for capillary GC and GC×GC systems requiring stable, low-moisture hydrogen supply.
- Fuel gas for FID and reduction gas for pulsed discharge helium ionization detectors (PDHID).
- Blank gas and purge gas in residual solvent analysis (e.g., USP , ICH Q3C).
- Hydrogenation reaction atmosphere control in catalytic screening reactors.
- Calibration gas dilution systems requiring zero-background hydrogen matrix gas.
- On-site generation for portable GC field deployments where cylinder logistics are prohibitive.
FAQ
What water quality is required for optimal operation?
Deionized water with resistivity ≥15 MΩ·cm and total organic carbon (TOC) <10 ppb is mandatory. Integrated water quality sensor triggers an alert if conductivity exceeds 0.1 µS/cm.
Can the HYDRO65LS be integrated into an existing lab gas network?
Yes—equipped with 6 mm OD stainless steel outlet tubing and pressure-rated fittings compliant with ISO 8573-9:2017; manifold integration requires external pressure-regulated distribution panels.
Is hydrogen purity verified during commissioning?
Each unit undergoes factory-certified gas chromatographic verification using a calibrated TCD detector and certified reference standards traceable to NIST SRM 1675b.
What safety mechanisms prevent hydrogen accumulation?
Built-in leak detection via pressure decay test at startup, automatic shutdown on sustained pressure loss >0.2 bar/min, and integrated catalytic recombiner to convert trace H₂/O₂ mixtures into water vapor.
Does the unit require annual calibration?
No—electrochemical performance is inherently stable; however, annual verification of purity and flow accuracy against NIST-traceable standards is recommended per ISO/IEC 17025 accreditation guidelines.
