Laboratory Nitrogen Generator
Bench-top nitrogen generator delivering on-demand inert gas supply for analytical instrumentation and laboratory applications requiring consistent nitrogen atmosphere.
Louise Corscadden, PhD
Director of Science · ConductScience
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Key Specifications
Full details →- Output Pressure
- 0–0.5 MPa (factory setting 0.4 MPa)
- Purity
- >99.997%
- Air Source
- External air source models: compressed-air supply required, Built-in compressor models: oil-free compressor
- Power Consumption
- 300 mL/min, external air source: 80 W, 500 mL/min, external air source: 120 W, 300 mL/min, built-in compressor: 650 W, 500 mL/min, built-in compressor: 750 W
- Power Supply
- AC 220 V ±10%, 50 Hz ±5% (standard), AC 110 V, 60 Hz (optional)
- Operating Temperature
- 10–40 °C
The Laboratory Nitrogen Generator provides on-demand nitrogen gas generation for analytical instrumentation and laboratory applications requiring inert atmospheres. This bench-top unit eliminates the need for nitrogen cylinders through electrolytic separation technology, using an improved double-cathode stainless steel electrolytic cell to produce high-purity nitrogen (>99.997%) for chromatography, mass spectrometry, and sample storage applications.
It comes in four models: 300 or 500 mL/min, each either fed from an external compressed-air source or with a built-in oil-free compressor for standalone operation. The external-air models are compact benchtop units (320 × 220 × 375 mm, W × D × H); the built-in-compressor models measure 425 × 305 × 680 mm. All four deliver nitrogen continuously at an outlet pressure of 0–0.5 MPa (factory setting 0.4 MPa).
How It Works
This nitrogen generator employs electrolytic separation technology using an improved double-cathode stainless steel electrolytic cell. An electrolyte solution is circulated through the cell, where an applied electrical current drives the separation of nitrogen and oxygen from the feed air. Nitrogen is collected at the cathode side while oxygen is exhausted simultaneously, with unimpeded electrolyte circulation ensuring continuous operation.
The electrolysis separation cell features a large active area that maintains low cell temperatures during operation, enabling high gas production rates while achieving nitrogen purity exceeding 99.997%. A unique anti-liquid return device prevents electrolyte from entering the gas output lines, protecting downstream instrumentation.
Built-in voltage stabilization ensures consistent electrolysis performance, and an automatic gas circuit shutoff activates in the event of power failure to prevent backflow. The external-air models need a compressed-air supply, while the built-in-compressor models carry an oil-free compressor for self-contained operation.
Features & Benefits
Research identifier
This ID comes from the Ontology for Biomedical Investigations (OBI). Use it in data records and methods sections.
- Device type
- Nitrogen generator
OBI:0000550
Output Pressure
- 0–0.5 MPa (factory setting 0.4 MPa)
Purity
- >99.997%
Air Source
- External air source models: compressed-air supply required
- Built-in compressor models: oil-free compressor
Power Consumption
- 300 mL/min, external air source: 80 W
- 500 mL/min, external air source: 120 W
- 300 mL/min, built-in compressor: 650 W
- 500 mL/min, built-in compressor: 750 W
Power Supply
- AC 220 V ±10%, 50 Hz ±5% (standard)
- AC 110 V, 60 Hz (optional)
Operating Temperature
- 10–40 °C
Operating Humidity
- ≤85%
Instrument Size (W × D × H)
- External air source models: 320 × 220 × 375 mm
- Built-in compressor models: 425 × 305 × 680 mm
Packing Size (W × D × H)
- External air source models: 415 × 315 × 485 mm
- Built-in compressor models: 485 × 390 × 775 mm
Net Weight
- External air source models: 15 kg
- Built-in compressor models: 36 kg
Gross Weight
- External air source models: 17 kg
- Built-in compressor models: 39.2 kg
Separation Method
- Electrolytic, double-cathode stainless steel cell
Protection
- Anti-liquid-return device
- Voltage stabilization
- Gas circuit closes automatically after a power failure
Automation Level
- semi-automated
Research Domain
- Analytical Chemistry
- Environmental Monitoring
- Food Science
- Materials Science
- Microbiology
- Pharmaceutical QC
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Space Requirements | 320 × 220 × 375 mm bench-top footprint (external-air models) | Larger units often require floor space or dedicated utilities | Bench-top installation maximizes laboratory space utilization |
| Weight | 15 kg (external-air models) / 36 kg (built-in-compressor models) | Floor-standing models typically weigh 50+ kg | The external-air models are easy to reposition |
| Generation Technology | Electrolytic separation (>99.997% purity) | PSA and membrane models may achieve lower purity levels | Electrolytic cell provides superior nitrogen purity for demanding analytical applications |
| Flow Rate | Up to 300 or 500 ml/min depending on model | Comparable bench-top units typically max at 300-500 ml/min | Multiple model options match exact flow requirements |
| Installation Options | External compressed-air source or built-in oil-free compressor | Most generators require either external air or have compressor only | Flexibility to choose based on existing lab infrastructure |
This nitrogen generator uses electrolytic separation technology with a compact bench-top design, providing on-demand nitrogen at >99.997% purity. The 300 mL/min external-air model weighs 15 kg and draws 80 W, while the built-in-compressor models include an oil-free compressor for labs without a compressed-air supply.
| Model | SKU | Listed price | Status | Shipping box |
|---|---|---|---|---|
| 300 mL/min, external air source | BIO-0743-300MLMIN-EXT | Quote | Available | 41.5 × 31.5 × 48.5 cm |
| 500 mL/min, external air source | BIO-0743-500MLMIN-EXT | $2,699.95 | Available | 41.5 × 31.5 × 48.5 cm |
| 300 mL/min, built-in compressor | BIO-0743-300MLMIN-COMP | $2,927.95 | Available | 48.5 × 39 × 77.5 cm |
| 500 mL/min, built-in compressor | BIO-0743-500MLMIN-COMP | $2,699.95 | Available | 48.5 × 39 × 77.5 cm |
Practical Tips
Verify nitrogen purity using an oxygen analyzer before connecting to sensitive analytical instruments.
Why: Initial purity confirmation ensures compatibility with downstream analytical requirements.
Check electrolyte levels and replace inlet air filters according to manufacturer schedule.
Why: Proper electrolyte maintenance and clean inlet air ensure consistent nitrogen purity and extend cell life.
Allow 30-minute stabilization period after power-on before using nitrogen for critical measurements.
Why: Thermal equilibration ensures stable operating conditions and consistent gas output characteristics.
Monitor output pressure and flow rate regularly; declining values may indicate electrolyte depletion or cell maintenance needs.
Why: Early detection of performance changes prevents analytical disruptions and extends equipment life.
Install pressure regulators at instrument connection points to maintain stable gas delivery pressure.
Why: Consistent pressure reduces baseline noise and improves measurement reproducibility in analytical methods.
Ensure adequate ventilation around the unit to prevent heat buildup during continuous operation.
Why: Proper airflow maintains optimal operating temperature and prevents thermal stress on internal components.
Setup Guide
What’s in the Box
- Laboratory Nitrogen Generator main unit
- Power cord (typical)
- Output gas tubing (typical)
- Pressure fittings and connectors (typical)
- User manual and technical documentation (typical)
- Warranty certificate (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship, with technical support available for installation and operational guidance.
Compliance
What nitrogen purity levels does this generator achieve?
All four models achieve >99.997% nitrogen purity via electrolytic separation at their rated flow rates.
Can this unit supply multiple analytical instruments simultaneously?
Yes, the generator can supply multiple instruments through appropriate flow splitting, provided total demand does not exceed the rated output (300 or 500 ml/min depending on model).
How does output purity compare to cylinder nitrogen?
At >99.997%, the electrolytic separation technology matches or exceeds many cylinder nitrogen grades, making it suitable for chromatography, mass spectrometry, and other demanding analytical applications.
What maintenance is required?
Routine maintenance includes checking electrolyte levels, periodic replacement of inlet air filters, and inspection of the electrolytic cell. Consult product documentation for recommended service intervals.
Does ambient humidity affect performance?
The unit is rated for operation at humidity up to 85% and temperatures of 10-40 degrees C. Optimal performance occurs within these ranges.
Can I monitor nitrogen purity continuously?
The unit provides operational indicators, but continuous purity monitoring requires external oxygen analyzers or similar detection equipment for critical applications.
What happens during power outages?
Built-in voltage stabilization handles minor fluctuations. During full power loss, the automatic gas circuit shutoff activates to prevent backflow. For critical applications, consider UPS or backup cylinders.
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