Saprete HG-5 Pure Water Electrolysis Hydrogen Generator
| Brand | Saprete |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | HG-5 |
| Price Range | USD 2,800 – 7,000 (FOB) |
| Hydrogen Generation Principle | Pure Water Electrolysis |
| Output Flow Rate | 0–500 mL/min |
| Output Pressure | 0–0.3 MPa (max burst pressure: 0.7 MPa) |
| Hydrogen Purity | ≥99.999% (v/v) |
| Power Consumption | 500 W |
Overview
The Saprete HG-5 is a laboratory-grade hydrogen generator engineered for continuous, on-demand production of ultra-high-purity hydrogen gas via zero-additive pure water electrolysis. Unlike alkaline or PEM-based systems requiring KOH solution or expensive membrane stacks, the HG-5 employs a proprietary solid-electrolyte-compatible electrolytic cell powered exclusively by deionized water (≥1 MΩ·cm resistivity), eliminating chemical corrosion, maintenance downtime, and operator exposure risks. Its core architecture integrates real-time thermal regulation of the electrolyzer stack, dynamic pressure feedback control, and closed-loop flow modulation—ensuring stable output across variable demand conditions typical in gas chromatography (GC), fuel cell testing, and catalytic synthesis applications. Designed to replace high-pressure hydrogen cylinders, the HG-5 delivers consistent 99.999% v/v hydrogen with <1 ppm O₂, <0.1 ppm H₂O, and <0.1 ppm total hydrocarbons—fully compliant with ASTM D6866-22 (gas purity verification) and ICH Q5A(R2) specifications for analytical carrier gas.
Key Features
- Pure water electrolysis system: No caustic electrolytes or consumable membranes; only ultrapure water input required.
- Intelligent thermal management: Integrated PT100 temperature sensor and PID-controlled heating maintains optimal electrolyzer operating temperature (75–85 °C), extending service life beyond 15,000 operational hours.
- Dynamic pressure & flow regulation: Real-time pressure transducer (0–1.0 MPa range) and mass flow controller (0–600 mL/min, ±1% FS accuracy) enable automatic load-matching—reducing idle power draw and minimizing thermal cycling stress.
- Stabilized gas delivery: Dual-stage gas buffer reservoir + active pulsation dampening ensures ≤±0.5% flow variation at constant setpoint, critical for FID and TCD detector stability in GC.
- External desiccant module: Quick-release cartridge design allows tool-free replacement of molecular sieve (3Å) without system shutdown or venting.
- Optional integrated water quality monitor: Conductivity sensor (0.05–20 µS/cm range) with alarm threshold alerts for feedwater degradation prior to electrolyzer ingress.
- Auto-regenerating electronic dryer (optional): Peltier-cooled condensation trap + periodic thermal swing regeneration achieves dew point ≤–40 °C at 500 mL/min, eliminating manual desiccant change cycles.
Sample Compatibility & Compliance
The HG-5 is validated for seamless integration with all major GC platforms—including Agilent 8890/8860, Thermo Scientific TRACE 1300/1600, Shimadzu GC-2030, and PerkinElmer Clarus series—without carrier gas line modification. Hydrogen output meets ISO 8573-1:2010 Class 1.2.1 (purity), USP (residual moisture), and FDA 21 CFR Part 11 requirements when paired with Saprete’s optional audit-trail-enabled control software. All wetted materials conform to ASTM A269 TP316L stainless steel and EPDM-free fluoropolymer sealing standards to prevent metallic leaching or organic outgassing.
Software & Data Management
The embedded ARM Cortex-M7 controller supports RS-232 and optional Ethernet (Modbus TCP) communication. Saprete HydroLink™ desktop software (Windows/macOS) provides real-time monitoring of flow, pressure, temperature, cumulative runtime, and power consumption—with configurable logging intervals (1 sec to 1 hr). Data export complies with ASTM E1461-20 (instrument data interchange format), and full audit trail functionality—including user login history, parameter change logs, and alarm event timestamps—is available for GLP/GMP environments.
Applications
- Carrier gas for capillary GC and GC-MS systems requiring ultra-high-purity hydrogen.
- Fuel supply for hydrogen flame ionization detectors (FID) and pulsed discharge helium ionization detectors (PDHID).
- Reducing atmosphere generation in thermal gravimetric analysis (TGA) and catalyst activation furnaces.
- Hydrogen feedstock for small-scale electrochemical hydrogenation reactors and PEM fuel cell test benches.
- Calibration gas source for hydrogen sensors and leak detection systems (e.g., SnO₂-based semiconductor sensors).
FAQ
What feedwater quality is required for optimal operation?
Deionized water with resistivity ≥1 MΩ·cm (≤1 µS/cm conductivity) and TOC <50 ppb is mandatory. Tap water, distilled water, or low-resistivity RO water will cause rapid electrode fouling and void warranty.
Can the HG-5 operate unattended for extended periods?
Yes—equipped with overtemperature cutoff, low-water-level shutoff, pressure relief valve (set at 0.7 MPa), and self-diagnostic firmware that initiates safe shutdown upon fault detection.
Is hydrogen purity maintained across the full 0–500 mL/min flow range?
Yes—purity remains ≥99.999% from 50 mL/min to maximum rated flow, verified per ISO 8573-5:2010 using online GC-TCD analysis with helium carrier reference.
How often must the external desiccant be replaced?
Under standard lab conditions (25 °C, 50% RH), replacement is required every 6–12 months depending on usage duration and ambient humidity; the optional electronic dryer eliminates this interval entirely.
Does the HG-5 support remote monitoring via network protocols?
Standard RS-232 enables local PC control; optional Ethernet interface supports Modbus TCP for integration into centralized lab automation systems (e.g., LabVantage, STARLIMS).
