Sulphide (or sulfide) is an inorganic anion of sulphur and when dissolved in water, can be very aggressive and lead to corrosion. They can also lead to odour issues.


In the wastewater industry, sulphides can be measured online to monitor odour issues or as an early warning measurement in sewers. In sewers, the presence of sulphide can lead to sulphuric acid generation which can damage the sewer infrastructure.


The most common method for determining sulphide concentration is colorimetry as this has a low detection limit.  In sewer networks or at a wastewater treatment works, a better approach is often the use of UV spectroscopy as the sensor can be dipped directly in the medium and does not consume reagents.


In the oil and gas industry, sulphides are measured to define the concentration of sulphide in ‘sour water’ prior and after removal via stripping.

Our products, your world.

Products for this application


An industrial colorimeter for sulphide measurement in the oil and gas industry

s::can sulfi::lyser

An online UV spectrophotometer for sulfide measurement in wastewater applications

Here are some related articles

Sulphide measurement in sewers

Protect your wastewater assets with an H2S control system.

Sulphide builds up in sewers is a serious issue for water utilities. Aside from the noxious smell associated with the generation of hydrogen sulphide (H2S) which may upset local communities.

Controlling odour and H2S in wastewater treatment works

In this case study, a wastewater treatment works monitored sulphide at the inlet of their works to optimise dosing of odour control chemicals and minimise H2S issues.


To contact us, or to request a callback, simply use the form below and we will promptly get back to you.

An even better reason to contact us about any of our products and services. Your enquiry will get into our new prize draw for HomePod mini.

We greatly value all of the inquiries which our products and services generate and we are very confident that we will have the right solution available for you at the first point of contact when you reach our experienced team of engineers. As an added incentive to any company in the UK, your enquiry about any of our products will get you entered into a prize draw to win a HomePod mini. So what are you waiting for?

List of recent PMA competition winners.

Need help with anything?

Contact us directly
at [email protected]

A bit about us

Established in 1971 PMA is a well-recognised provider of online instrumentation for process control and compliance monitoring. With expertise in analytical techniques such as Photometry, Colorimetry, Ion-selective electrodes (ISEs), Titration, Fluorescence, Ultrasonics and more.

© 2020 Process Measurement and Analysis Ltd, Water, Oil, Chemicals.

Customer Satisfaction Rating

Customer satisfaction rating in compliance with ISO/TS 1004:2012: Quality Management System Guidelines