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SGS and Protium Partner to Trial Innovation in Analytical Measurement Technology to Revolutionize How Hydrogen Purity is Measured

December 22, 2025

Protium is one of the UK’s leading green hydrogen companies, with a mission to grow both the supply and demand for green hydrogen, unlocking large-scale production and making clean energy cost-competitive with fossil fuels. By doing this, the goal is to decarbonize, solve the challenge of providing reliable, affordable and sustainable energy, enabling customers to access solutions that outperform existing alternatives.

Protium has partnered with SGS for many years, drawing on their expertise in fuel-grade hydrogen testing and analysis.

SGS has recently launched new technology for measuring gas purity based on an acoustic speed of sound response. Working with SGS, Protium agreed to make their facility available for extensive field trials of the new portable instrument.

Shaun James, Senior Engineering Technician at Protium said: “The quick set up, ease of use and stable reading allows us to quickly and effectively check the quality of the hydrogen we produce. It ensures we and our customers have confidence in the final product.

“The portability of the instrument and long battery life opens additional possibilities for us to use the analyzer for checking of our product prior to laboratory tests, new vessels coming into service, and trailers and trucks post fill for accuracy and quality. The addition of the binary gas feature allows us also to test for key impurities in our hydrogen, such as nitrogen”

The ASTG 500 is designed for customers to be able to make quick and accurate gas purity measurements in the field. The fast set up, ease of use and reliable data, as well as the data logging, will allow customers to transform the way they manage and verify the quality of their product and/or gas.

SGS’s James Clark, Regional Sales Manager, said: “We’re delighted with the field trial performance of the ASTG analyzer, particularly the quick set up and accurate and stable readings. Being able to trial the analyzer allowed the customer to see firsthand the benefits, building trust that it will do what they need it to do.

“For SGS, the ASTG brand inspires quality and trust, and so we were confident that conducting a trial would lead to results.”

Moving forward, Protium is considering working with SGS and using the new portable purity analyzers in other areas of its business including its new larger scale Pioneer 2 plant. It is confident that the analyzer will help transform the way they manage and control the purity of their hydrogen.

Download the full case study.

For further information, please contact:

James Clark
Regional Sales Manager
Industries & Environment
t: +44 (0)7764 279 191

About SGS

SGS is the world’s leading Testing, Inspection and Certification company. We operate a network of over 2,500 laboratories and business facilities across 115 countries, supported by a team of 99,500 dedicated professionals. With over 145 years of service excellence, we combine the precision and accuracy that define Swiss companies to help organizations achieve the highest standards of quality, compliance and sustainability.

Our brand promise – when you need to be sure – underscores our commitment to trust, integrity and reliability, enabling businesses to thrive with confidence. We proudly deliver our expert services through the SGS name and trusted specialized brands, including Brightsight, Bluesign, Maine Pointe and Nutrasource.

SGS is publicly traded on the SIX Swiss Exchange under the ticker symbol SGSN (ISIN CH1256740924, Reuters SGSN.S, Bloomberg SGSN:SW).

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