Sulphate and nitrite reducing bacteria (SRB, NRB)
SRB and NRB in water testing for corrosion monitoring
Laboratories of Eurofins Water Hygiene Testing provide testing for sulphate reducing bacteria (SRB) and nitrite reducing bacteria (NRB), supporting water treatment and corrosion management professionals across industrial and commercial systems.
Understanding SRB and NRB
Sulphate reducing bacteria (SRB) and nitrite reducing bacteria (NRB) are anaerobic microorganisms frequently implicated in microbiologically influenced corrosion (MIC) within industrial water systems and closed-loop networks. These bacteria thrive in low-oxygen environments where they metabolise sulphate or nitrite-based inhibitors, preventing corrosion inhibitors from working effectively and producing corrosive by-products such as hydrogen sulphide (H₂S) and ammonia.
Their activity can accelerate corrosion, particularly in carbon steel pipework, heat exchangers, and cooling circuits.
Essential for corrosion monitoring and closed system health
SRB and NRB testing plays a crucial role in maintaining the health of closed heating and cooling systems, district energy networks, industrial process loops, and offshore or oilfield operations. Elevated levels of these bacteria may indicate water stagnation, oxygen ingress, dead legs, or ineffective chemical dosing.
Regular microbiological monitoring enables early detection of SRB and NRB activity, supports targeted biocide or corrosion inhibitor treatment, and helps protect systems from long-term damage and failure.
Accredited laboratory testing
Eurofins water hygiene testing has UKAS-accredited laboratories (No. 9658 and 1369) specialising in culture-based testing for SRB and NRB in closed system process waters. Although these specific tests are not accredited, they are carried out using the same rigorous quality systems and methods as our accredited testing portfolio.
Trusted by industry professionals
Eurofins SRB and NRB testing services are trusted by water treatment specialists, facilities managers, plant engineers, and corrosion consultants throughout the UK. Whether conducting routine monitoring, validating biocide performance, or investigating unexplained corrosion, Eurofins delivers reliable testing to support your operational strategy.
Why choose Eurofins Water Hygiene Testing
- Performed in ISO 17025 UKAS-accredited laboratories
- Essential for MIC prevention, closed system condition monitoring, and risk assessment
- Suitable for heating and chilled water systems, industrial process loops, and offshore applications
- Backed by a national refrigerated logistics network for fast, secure sample delivery
UK-wide drop-off facilities
Eurofins UK clients benefit from our extensive and free to use logistics and sample drop-off network with over 60 drop-off locations.
Sample bottles
To ensure that we are able to test your water chemistry samples please submit them in appropriate sample bottles.
Get in touch
Would you like to find out more about our water hygiene testing and compliance services? Contact Eurofins Water Hygiene Testing UK today by submitting an enquiry form or calling +44 (0) 845 604 6740.