When Clean Air Matters

Welcome to explore our fields of activity, services, and measurement systems for air pollution and industrial gas analysis!

When Clean Air Matters

Welcome to explore our fields of activity, services, and measurement systems for air pollution and industrial gas analysis!

Listen to our podcast series, one on air quality and one on industrial gas analysis.

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News

2026-03-30

Chlor-alkali – Tough to Measure

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2026-03-25

We Are Successfully ISO Recertified

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2026-03-19

OPSIS Emissions Analysers Earn CSIR-NPL Recognition in India

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Latest from the Blog

Gas Monitoring In The Chlor Alkali Industry 960X640pxl

2026-03-30

Gas Monitoring in the Chlor-alkali Industry

How can you determine low-level gas concentrations with high accuracy in aggressive gas mixtures? And how can it be done reliably with low maintenance costs and high data availability? It can be a challenge, but OPSIS has the solution. Let’s look at an example from the chlor-alkali industry.

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Video in Focus

H2S Monitoring

It can be difficult to monitor H2S. The gas lacks distinct UV absorption lines and IR absorption monitoring is affected by interference from H2O.

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