CRDS Gas Analyzers
HIGH-PERFORMANCE UHP GAS ANALYZERS | Analyze with Ease
Our TIGER OPTICS™ Cavity Ring-Down Spectroscopy (CRDS) gas analyzers have a long history in industrial gas, medical gas, and chemical processing enabling detection of moisture and other rogue impurities in process gas streams, including inert, reactive, corrosive, bulk and specialty gases.
For a complete range of analytical instrumentation, applications, systems, and service options, please contact us. We will work to match your needs and budget and provide the optimal, and most stable process analysis solution for your application.
Specifications & Detection Capabilities Table
Not sure what you need? Unfamiliar with our CRDS gas analyzer portfolio?
Looking for a summary of our Cavity Ring-Down Spectroscopy (CRDS) Analyzer Specifications and Detection Capabilities?
SERVICE & SUPPORT
Whether you require technical support, spare parts, or more information about our CRDS Analyzer | Performance Verification Program, we’ve got you covered.
If your analyzer is currently in service or you’re facing any challenges with it, rest assured that our dedicated team is here to assist you every step of the way. Our prompt and reliable technical support is just a call or message away, ensuring minimal downtime and optimal performance for your CRDS Analyzer. Ask about our Performance Verification Program.
In case you require a temporary solution or want to explore our CRDS analyzers before making a long-term commitment, our rental options are available. We offer flexible rental plans to accommodate your specific requirements, allowing you to experience the capabilities of our CRDS analyzers firsthand.
HOW WE ARE DIFFERENT FROM OUR COMPETITORS
- Measurement Principle: Our gas analyzers use Cavity Ring-Down Spectroscopy (CRDS), which measures the decay time of light resonating inside an optical cavity filled with the gas that is being analyzed. Unlike techniques used by most of our competitors, this time-based principle allows for absolute accuracy and insensitivity to various noise sources.
- Detection Limit: The absorption enhancement of the optical cavity gives our CRDS systems a lower detection limit than many of our competitor’s gas analyzers, making them better suited for measuring trace and ultra-trace levels gases.
- Calibration: Our CRDS gas analyzers are factory-calibrated against NIST-traceable standards and are free from long-term drift, removing requirements for regular field calibrations, while our competitor’s gas analyzers require recalibration at regular intervals to correct for drift.
- Specificity: Using narrow-linewidth lasers as light sources, our CRDS analyzers are highly specific to the target analyte and are free from most common interferences. Our competitor’s gas analyzers often require sample conditioning to remove interfering species or additional calibration steps to cancel out their effect on the concentration measurement.


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SERVICE | SALES | TRAINING
Americas +1 (215) 656-4000
EMEA +49 69 20436910
China/APAC +86 400 086 0106
HIGH PURITY RESOURCES
Discover our comprehensive High-Purity Resources Page dedicated to supporting our cutting-edge CRDS Technology, products, and solutions. Access a wealth of valuable materials, including data sheets, brochures, application notes, and more, all at your fingertips.
FEATURED PRODUCT
No need for calibration, spare parts, or worries about drift and downtime!
Experience the power of advanced spectroscopy at an accessible price point with the TIGER OPTICS™ Spark™ H2O. CRDS Analyzer. This cutting-edge analyzer offers fast and straightforward startup and operation. From quality assurance to cylinder filling, welding, medical, industrial and high-purity gas production, as well as bulk delivery and distribution transfer points, the Spark H2O caters to a wide range of applications. Say farewell to the cumbersome, complex, costly, and labor-intensive technologies of the past and embrace a new era of efficiency and affordability with the Spark H2O.
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NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY (NIST)
The National Institute of Standards and Technology (NIST) used our TIGER OPTICS HCl analyzer to develop its HCl standards. Our TIGER OPTICS HCl analyzers were used by the National Institute of Standards and Technology (NIST) to develop its HCl standards through a process known as gravimetric preparation. In this process, a known amount of pure HCl gas is diluted with a carrier gas, typically nitrogen, to create a sample with a known concentration of HCl. The sample is then passed through a TIGER OPTICS HCl analyzer to verify the concentration.
By using the HCl analyzer, NIST was able to precisely measure the concentration of HCl in the gas mixture, which allowed them to accurately prepare the HCl standards. The high sensitivity and accuracy of the TIGER OPTICS HCl analyzer ensured that the standards were of the highest quality, which is essential for accurate measurements in a wide range of applications.
In another study, NIST researchers evaluated the performance of a CRDS instrument for measuring methane (CH4) in natural gas samples. They found that the instrument was highly accurate and precise, with a measurement uncertainty of less than 0.1% over a range of concentrations.
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DESIGNATION: D7941/D7941M − 23
Standard Test Method for Hydrogen Purity Analysis Using a Continuous Wave Cavity Ring-Down Spectroscopy Analyzer
SCOPE
1.1 This test method describes contaminant determination in fuel cell grade hydrogen as specified in relevant ASTM and ISO standards using cavity ring-down spectroscopy (CRDS). This standard test method is for the measurement of one or multiple contaminants including, but not limited to, water (H2O), oxygen (O2), methane (CH4), carbon dioxide (CO2), carbon monoxide (CO), ammonia (NH3), and formaldehyde (H2CO), henceforth referred to as “analyte.”
1.2 This test method applies to CRDS analyzers with one or multiple sensor modules (see 6.2 for definition). This test method describes sampling apparatus design, operating procedures, and quality control procedures required to obtain the stated levels of precision and accuracy.
SCOPE
1.1 This test method describes contaminant determination in fuel cell grade hydrogen as specified in relevant ASTM and ISO standards using cavity ring-down spectroscopy (CRDS). This standard test method is for the measurement of one or multiple contaminants including, but not limited to, water (H2O), oxygen (O2), methane (CH4), carbon dioxide (CO2), carbon monoxide (CO), ammonia (NH3), and formaldehyde (H2CO), henceforth referred to as “analyte.”
1.2 This test method applies to CRDS analyzers with one or multiple sensor modules (see 6.2 for definition). This test method describes sampling apparatus design, operating procedures, and quality control procedures required to obtain the stated levels of precision and accuracy.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Curious about our new HALO Max QCL?
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SPARK INSTALLATION IS FAST!
Watch and see how quickly the installation process is with our Spark.
SOFTWARE FOR OUR CRDS ANALYZERS
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SPEED SOFTWARE
Great News! We now offer a new CRDS analyzer performance upgrade. Implementing our new intelligent dynamic data processing, the Speed+™ Analyzer Performance Upgrade Software adjusts your analyzer’s response automatically and in real-time to deliver the best performance. Find out more.
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SERANI MAX INTERFACE SOFTWARE
Serani™ Max Analyzer Interface Software allows you to have remote access from your desktop computer or laptop for our latest generation of CRDS analyzers. The Windows-based software package allows full control of the system conveniently from your desk. Get the details!
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SERANI SOFTWARE
Our Serani™ Analyzer Interface Software offers users a way to access most of our legacy platform analyzers remotely from any computer or laptop. The Windows-based software package communicates with the analyzer through RS-232 or Ethernet and allows full control of the system and data collection.