When your laboratory depends on a consistent supply of inert gas, you need more than a convenient source of nitrogen. You need a system that can support your applications reliably, reduce supply interruptions, and help you maintain controlled working conditions. A Nitrogen Generator can provide an on-demand source of nitrogen directly from compressed air, reducing your dependence on cylinders and bulk gas deliveries.
For laboratories working with moisture-sensitive materials, analytical equipment, controlled-atmosphere enclosures, chemical processes, or sensitive components, an on-site nitrogen supply can make daily operations more predictable. You can also simplify gas management by producing nitrogen when you need it rather than storing multiple cylinders.
What Is a Nitrogen Generator?
A nitrogen generator is a gas-separation system that produces nitrogen from compressed air. Compressed air contains primarily nitrogen and oxygen, along with smaller quantities of other gases. A generator separates these components and delivers nitrogen at the required purity and flow rate.
Membrane nitrogen generators are one option for laboratory and industrial applications. In this approach, compressed air passes through a specialized membrane that separates gases according to their permeation characteristics. Nitrogen is collected as the product gas while other gases pass through the membrane and are removed.
Depending on the system and operating conditions, nitrogen generators can provide high-purity gas with controlled moisture levels. Cleatech’s membrane systems, for example, are designed for on-demand nitrogen production and can achieve purity levels of up to 99.5% according to its published product information.
Why Use On-Site Nitrogen in Your Laboratory?
Traditional nitrogen cylinders can be effective, but they introduce logistical challenges. You must monitor cylinder levels, arrange replacements, manage storage, and account for delivery schedules. A generator can reduce many of these concerns.
1. Maintain a Continuous Gas Supply
You can generate nitrogen as required instead of depending entirely on stored cylinders. This is particularly useful when your laboratory performs repetitive processes that require nitrogen throughout the working day.
A properly sized system can provide a dependable gas supply for equipment, enclosures, purging systems, and other laboratory applications.
2. Reduce Cylinder Dependence
Gas cylinders require handling, storage space, and regular replacement. They can also create workflow interruptions if a cylinder becomes empty during an important procedure.
Producing nitrogen on-site can help you reduce the frequency of cylinder changes and simplify your laboratory’s gas-supply management.
3. Support Controlled Atmospheres
Nitrogen is an inert gas commonly used to reduce exposure to oxygen and moisture. You can use it to support controlled environments inside glove boxes, desiccators, storage systems, and process equipment.
This can be particularly important when your materials or experiments are sensitive to atmospheric conditions.
4. Improve Operational Convenience
With an appropriately configured generator, nitrogen is available at the point of use without requiring repeated cylinder deliveries. You can integrate the gas supply with your laboratory distribution system and connect it to compatible equipment.
This approach can make routine laboratory operations easier to manage.
Common Laboratory Applications
A nitrogen generator can support several laboratory processes where a reliable inert gas supply is required.
Purging Sensitive Equipment
You can use nitrogen to purge vessels, chambers, lines, and other equipment before or during laboratory procedures. Purging helps displace atmospheric gases and can support controlled processing conditions.
Glove Boxes and Controlled Atmospheres
Glove boxes often require an inert atmosphere for applications involving oxygen- or moisture-sensitive materials. A suitable nitrogen generator can provide the gas needed to establish or maintain the desired atmosphere.
The generator should be selected according to your enclosure’s volume, purge requirements, operating pressure, and required gas purity.
Desiccator Cabinets and Dry Storage
Nitrogen can also be used for moisture-sensitive storage. When introduced into an appropriate storage enclosure, nitrogen can help displace humid atmospheric air. Cleatech notes nitrogen as a standard inert gas for forcing moisture out of desiccator cabinets.
If you already use a controlled-atmosphere storage system, an on-site nitrogen source can provide a practical way to support its operation.
Analytical Equipment
Some analytical instruments require nitrogen for specific processes, purging, or controlled gas environments. Before connecting a generator, verify the instrument manufacturer’s required purity, pressure, flow, and gas quality specifications.
Chemical Processing
Nitrogen is frequently used for inerting, solvent blanketing, chemical transfer, and vessel purging. You should always confirm that the generated nitrogen meets the requirements of your particular process.
How to Choose the Right Nitrogen Generator
Choosing a generator based only on nitrogen purity can lead to an unsuitable installation. You should evaluate the complete gas requirement before selecting a system.
Determine Your Required Purity
Start by identifying the minimum nitrogen purity your application requires. A routine purge may have different requirements from an analytical instrument or highly sensitive research process.
Do not automatically choose the highest available purity. Instead, match the generator specification to your actual process requirements.
Calculate Your Flow Rate
Flow rate is equally important. Determine how much nitrogen your equipment consumes under normal and peak operating conditions.
If several systems will operate simultaneously, calculate their combined demand. You should also consider intermittent high-flow requirements rather than sizing the generator only for average consumption.
Check Inlet Air Requirements
Membrane generators require an appropriate compressed-air supply. Before installation, verify the available air pressure, air quality, temperature, and flow.
Contaminated or poorly conditioned compressed air can affect generator performance. Filtration and appropriate pre-treatment should therefore be considered as part of the overall system.
Consider Installation Space
Laboratory space is often limited. Check the generator’s dimensions and determine whether a freestanding cabinet or wall-mounted configuration is more appropriate.
Cleatech lists both freestanding cabinet and wall-mount configurations for its membrane nitrogen generator systems.
Evaluate Monitoring Requirements
Depending on your application, you may need oxygen monitoring or additional gas-quality monitoring. Cleatech’s published nitrogen generator range includes optional oxygen analysis and monitoring.
Monitoring can give you greater visibility into gas quality and help you identify changes that require attention.
Nitrogen Generator vs. Nitrogen Cylinders
Both approaches have legitimate uses. Your choice should depend on consumption, facility layout, application requirements, and operating priorities.
| Consideration | Nitrogen Generator | Nitrogen Cylinders |
| Gas supply | Produced on demand | Stored gas |
| Deliveries | Reduced dependence | Regular replacement |
| Storage | Requires equipment space | Requires cylinder storage |
| Supply management | Based on compressed air | Based on cylinder inventory |
| Long-term use | Useful for recurring demand | Convenient for lower or intermittent demand |
| Installation | Requires system planning | Requires suitable cylinder connections |
For frequent laboratory nitrogen consumption, on-site generation can provide operational advantages. For occasional or very low-volume use, cylinders may remain practical.
Plan Your Nitrogen System Around the Application
Before purchasing a generator, document every point where nitrogen will be used. List the equipment, required purity, operating pressure, flow rate, expected usage pattern, and connection requirements.
Then compare these requirements with the generator’s specifications.
You should also consider future expansion. If your laboratory is likely to add additional glove boxes, analytical equipment, storage cabinets, or process systems, selecting a little additional capacity may provide useful flexibility.
At the same time, avoid significantly oversizing the generator without a clear reason. Proper sizing helps you balance performance, efficiency, installation requirements, and cost.
Maintenance and Reliable Operation
A nitrogen generator is not a completely maintenance-free gas source. You should follow the manufacturer’s recommended inspection and maintenance schedule.
Pay attention to the compressed-air supply, filters, connections, pressure conditions, and gas-quality indicators. Replace consumable filtration components according to the manufacturer’s recommendations rather than waiting for a noticeable decline in performance.
You should also keep records of maintenance activities and investigate unexpected changes in nitrogen purity, pressure, or flow.
Good maintenance practices can help you identify problems early and support consistent laboratory operation.
Safety Considerations for Laboratory Nitrogen
Nitrogen is nonflammable and commonly used as an inert gas, but you should not treat it as risk-free. Nitrogen can displace oxygen in an enclosed or poorly ventilated area, creating an oxygen-deficiency hazard.
Before installing a nitrogen generator, evaluate laboratory ventilation and the location of gas outlets. Follow applicable workplace safety requirements and your facility’s compressed-gas procedures.
You should also ensure that pressure-rated components, tubing, regulators, and connections are compatible with the operating conditions of your system.
Why Work With an Experienced Laboratory Equipment Supplier?
Selecting a nitrogen generator is easier when you can evaluate the generator alongside the equipment it will support. A supplier experienced in laboratory and cleanroom applications can help you consider gas requirements, installation conditions, equipment compatibility, and future needs.
CleaTech LLC provides laboratory and cleanroom equipment, including nitrogen generators, controlled-atmosphere equipment, glove boxes, desiccator systems, and other laboratory solutions. Its nitrogen generator range includes membrane systems intended for on-demand nitrogen production.
You can explore laboratory equipment solutions to compare related equipment and identify systems that fit your controlled-environment requirements.
Choose the Right Nitrogen Supply for Your Laboratory
Your nitrogen supply should support your laboratory rather than become another operational problem. By evaluating purity, flow rate, pressure, compressed-air quality, installation space, monitoring, and future demand, you can select a generator that matches your application.
An on-site nitrogen generator can be particularly valuable when you use nitrogen regularly for purging, controlled atmospheres, analytical equipment, dry storage, or chemical processes. With appropriate sizing, installation, and maintenance, it can provide a practical alternative to relying entirely on nitrogen cylinders.
Get Help Selecting Your Nitrogen Generator
If you are unsure which capacity or configuration fits your laboratory, request nitrogen generator guidance before making your purchase. Provide your required purity, flow rate, pressure, application, and operating schedule so the equipment can be evaluated against your actual needs.
You can contact the laboratory equipment team for product information, technical questions, pricing, or assistance with your laboratory and cleanroom requirements. Cleatech’s published contact information identifies its headquarters in Orange, California, and provides dedicated customer service and sales contacts.
Frequently Asked Questions
1. What does a nitrogen generator do?
A nitrogen generator separates nitrogen from compressed air and supplies the resulting nitrogen for laboratory or industrial applications. Depending on its technology and configuration, it can provide controlled purity, pressure, and flow for applications such as purging, inerting, and controlled-atmosphere equipment.
2. Can you use a nitrogen generator for a laboratory glove box?
Yes. A suitably sized nitrogen generator can supply nitrogen to a compatible glove box. You should match the generator’s purity, flow, pressure, and capacity with the glove box manufacturer’s requirements and your specific application.
3. Does a nitrogen generator eliminate gas cylinders?
It can significantly reduce or eliminate routine dependence on nitrogen cylinders when the generator is correctly sized for your application. You still need an appropriate compressed-air supply and should evaluate backup-gas requirements for critical laboratory processes.
4. What purity should you choose for laboratory nitrogen?
The required purity depends on your application. Identify the gas-quality specification of your equipment or process first, then select a generator that consistently meets or exceeds that requirement under actual operating conditions.
5. What should you check before buying a nitrogen generator?
Check nitrogen purity, flow rate, outlet pressure, compressed-air requirements, installation dimensions, monitoring options, maintenance requirements, and expected future demand. Confirm that the generator is compatible with every laboratory application you intend to support.
