Trusted, accurate nitrogen analysis for your process

If you need to measure nitrogen for purity or process control, we have the nitrogen sensor solutions you need. As global experts in gas analysis, we offer accurate, cost-effective solutions to suit your individual process. Combining innovative Plasma Emission Detector technology with Gas Chromatography, our nitrogen gas analyzer products deliver sensitive, reliable results for nitrogen purity, process control, and N2 as a contaminant. Designed for safe area operation, our SERVOPRO nitrogen analyzers – the Chroma, NanoChrome, NanoChrome ULTRA, and Plasma – ensure the accuracy your process requires.

Why measure nitrogen?

Nitrogen is the primary component of atmospheric air, making up about 78% of total content. It is widely used in fertilizers, organic compounds, and pharmaceutics. As a result, many industrial processes need to measure nitrogen, particularly those in the medical gas sector. Nitrogen can be isolated from other air components in an air separation unit (ASU), requiring measurements for both purity assay and as a contaminant in other products such as oxygen and argon. The properties of nitrogen make it useful as an inerting environment in manufacturing, particularly in the electronics and semiconductor markets.

How gas analyzers work to measure nitrogen

Gas Chromatography separates out the constituent components of a gas mixture, allowing relative concentrations to be determined. Under optimized conditions, it can measure down to parts-per-billion (ppb) levels, making it ideal for high-purity control processes.

Servomex’s Plasma emission detection technology was developed to provide a safer alternative to flame-based sensing for hydrocarbon analysis, and delivers ultra-low measurements. It provides highly sensitive and selective speciation, so is only suitable for trace analysis applications.

Our solutions

The Chroma and NanoChrome are both capable of measuring trace nitrogen in background gases, and trace impurities in background nitrogen, making them highly flexible solutions for nitrogen gas analysis.

While the Chroma is a versatile nitrogen gas analyzer, the NanoChrome is specifically designed for semiconductor applications, with the ULTRA model delivering industry-leading lower detection levels for impurities. Additionally, the NanoChrome and NanoChrome ULTRA can form part of a complete single-supplier solution for the analysis of semiconductor gases.

The Plasma is specifically designed for trace-level continuous monitoring of nitrogen in argon, helium, or both, and is used in a range of applications including air separation units.

In addition, Servomex offers the PureGas getter-based purifier for light hydrocarbon measurements. This reduces outlet impurity levels for nitrogen and other compounds to low parts-per-billion (ppb) levels or below, removing impurities by forming irreversible chemical bonds.

Our solutions for nitrogen gas analysis

Servomex offers a range of nitrogen gas analyzers for process control, purity analysis, and contaminant monitoring. Our SERVOPRO products, the Chroma, NanoChrome, NanoChrome ULTRA, and Plasma, combine highly sensitive and accurate Gas Chromatography with an advanced Plasma Emission Detector nitrogen sensor.

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The Chroma is optimized to specific background gases to ensure optimum performance for your application.

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Incorporating the latest advances in gas sensing and signal processing methodology, the NanoChrome revolutionizes ultra-trace purity measurements.

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NanoChrome ULTRA


Using proven ultra-trace sensing, the NanoChrome ULTRA conquers the most stringent demands of the semiconductor industry, delivering a cost-effective solution compared to competing technologies.

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The Plasma delivers an accurate, highly stable and reliable measurement, with high sensitivity in the 0-1ppm range.

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A getter-based purification unit designed for the purification of carrier gases used in Gas Chromatography (GC) and other analytical applications

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Proven nitrogen sensing technologies

Our nitrogen analyzer range uses proven sensing solutions that deliver accuracy, ease of use, and a long operational life.

Gas Chromoatography

Gas Chromatography delivers high-purity analysis

Gas Chromatography is an analysis technique that works effectively alongside other sensing technologies, delivering a highly sensitive measurement of the constituent components of a gas sample. It is used in our SERVOPRO Chroma, NanoChrome, and NanoChrome ULTRA analyzers.

Learn more about Gas Chromatography technology

Plasma delivers a highly specific, stable gas measurement

Developed to provide a safer alternative to flame-based sensing for hydrocarbon analysis, Servomex’s Plasma emission detection technology delivers ultra-low gas measurements. It is used in our SERVOPRO Plasma, Chroma, NanoChrome, and NanoChrome ULTRA analyzers.

Learn more about Plasma technology

Useful Nitrogen resources

For more in-depth information about our nitrogen analysis solutions, download our additional expert resources

ES Magazine Issue 41 Reliable solutions for industrial gas applications

ES Magazine Issue 41 Reliable solutions for industrial gas applications

Pentatec case study

Pentatec case study

ES Magazine Issue 30 ASU

ES Magazine Issue 30 ASU

ES Magazine Issue 29 Clean Air

ES Magazine Issue 29 Clean Air

We provide nitrogen solutions for these applications and more

Here are just some of the key applications that can use Servomex analyzer technology to overcome their process measurement challenges.

Air separation units

Diverse sensing solutions that adapt to your process

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Medical gases

An advanced solution for purity assay and impurity detection

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UHP Gases / Semiconductors

A comprehensive systems solution

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Explore our full range of applications

Servomex – gas analysis to empower a changing world

Servomex is the global leader in gas analysis, providing solutions for cleaner, more efficient industries, and enabling the manufacture of products that benefit everyone. With 70 years of expertise and research behind us, we deliver industry-changing gas analysis measurements for process control, quality, safety, emissions monitoring, and combustion efficiency.

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Global service support delivered locally

Wherever you are in the world, our network of service engineers provides the expertise you need to keep your nitrogen analyzer operating at peak performance. With state-of-the-art service centers around the globe, you’ll always have the support your process needs.

Service team meeting customer

We provide tailored service packages that support your product throughout its life

Our global service network delivers the support you need to keep your analyzer or system operating at peak performance, for total peace of mind.

Broadly, we categorise our customers into two distinct groups

Purity & Specialty

Our Purity & Specialty (P&S) team provides products, knowledge and service to market sectors including industrial and medical gases, UHP gases, and semiconductor manufacture

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Industrial process & Emissions

Our Industrial Process & Emissions (IP&E) division is responsible for our gas analysis solutions in the power generation, hydrocarbon processing and emissions monitoring markets

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Choose the experts in Nitrogen gas analysis


We consult with you to determine what you need

Our team stays in place throughout the project, ensuring consistent communication. This starts with identifying the parameters that the system must meet to ensure optimum performance and ease of use.

We design and build your system in our dedicated facility

Our schematics and documents are reviewed by the customer until the final design is agreed upon. Our skilled engineers then assemble the system at one of our cutting-edge regional centers, with continuous evaluation throughout the build process.

We test and deliver your integrated solution

After internal testing and an intensive Factory Acceptance Test (FAT), the finished system is shipped for installation. Our expert support team can commission and calibrate the system and provide any necessary operator training.

The Servomex difference is clear from the start, all the way through to the delivery of an Nitrogen gas analysis system that will transform your process.

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