Providing the most reliable, flexible, and arguably the best water quality analyzers on the market.

+7 965 390 8845


Global Supplier Of Water Analysis Solutions

Process Instruments (UK) Ltd. (Pi) is a global supplier, providing water analyzer instrument solutions since 1998. With offices, a laboratory and new manufacturing facilities in Burnley (UK), with subsidiaries in Ireland and France and a company representative in China, Pi has a growing reputation for innovation with customers in over 50 countries, across 6 continents. A major part of Pi’s business is through Private Label/OEM agreements, so the name ‘Process Instruments’ is not as widely known as many of our competitors. Instead of focusing on building a brand name we instead aim to provide our customers with the most reliable, flexible, and arguably the best water quality analyzers on the market.


Find out how Process Instruments can help you and your business with our wide range of applications. From Pools to Paper, we’ve got you covered.
See More >


At Process Instruments, we take pride in our accuracy and precision. We have a wide range of tools available, find out what we can measure by clicking the link below.
See More >


Browse Process Instruments’ collection of Water 4.0 analyzers and Industry 4.0 instruments by clicking the link below.
See More >

Instrument Controllers

Take a look at Process Instruments revolutionary Instrument Controllers, CRONOS® & CRIUS®.
See More >
Contact us on...
+7 965 390 8845
Dmitry Zaitsev
Russia Team Leader
"Get in touch, I would be happy to help."
Daniel Nearney
Head Office Contact
"Get in touch, I would be happy to help."

The future for Process Instruments…

Ever growing, ever adapting, ever improving. With numerous product developments continually in the pipeline it is safe to say that Pi will always be leading the market, you just might not know it’s us!

If you would like to learn more about Pi, our products and how they might work for you, why not pick up the phone and give us a ring right now?

Looking for the best solution for you? Fill in the form and we will call you

Form is deprecated, please contact the webmaster to upgrade this form.

The latest Pi News

Pi wins Export and Innovation Awards at the Red Rose Awards 2021

Process Instruments were named winners of the Export and Innovation in Business Awards at the annual Lancashire Business View Red Rose Awards 2021. Pi – Double Winners! Following their Queen’s […]

Process Instruments celebrates double Queen’s Award win

Pi has celebrated receiving a royal seal of approval, after being handed two prestigious Queen’s Awards for Enterprise. We were officially handed our awards on Monday, November 8th by the […]

Particle Counter from Pi integrated into microscope washing system in Italy

The FilterSense particle counter from Pi was chosen by Novatec Srl to be integrated as part of a microscope washing system. The microscope components manufacturer approached Novatec Srl requesting that […]

Queen’s Award for Enterprise – Double Winner!

Pi has been awarded two Queen’s Awards for Enterprise, one for International Trade and the other for Innovation. Queen’s Award for Enterprise – International Trade At Pi we don’t have […]

Pi accredited as a Gold SafePQQ Contractor by Alcumus SafeContractor

Process Instruments (Pi) has been awarded accreditation from Alcumus SafeContractor for achieving excellence in health and safety in the workplace. Pi’s achieves Health and Safety and Risk Management certification SafePQQ […]

New DO sensor with integrated self-cleaning and self-verification

Dissolved Oxygen sensors almost always require self-cleaning to ensure accurate readings in difficult applications like aeration lanes on waste water treatment works. Pi releases two new Dissolved Oxygen sensors OxySense […]

Particle Counters from Pi chosen by Scottish Water as part of a system upgrade

Process Instruments (UK) Ltd. (Pi) has just completed a particle counter upgrade with Scottish Water, headed by Pi’s Service Director Jonathan Cook. Scottish Water renewing Pi particle counters after 20 […]

Pi doubles in size

Pi’s new building (exterior) Pi’s new sensor manufacturing area Pi moved to new premises just before Christmas 2020. Doubling the floor area and incorporating brand new sensor manufacturing areas and […]

Industry 4.0 a reality with CRIUS®4.0

The release of CRIUS®4.0 from Pi is a huge leap for water instrumentation. CRIUS®4.0, IoT and MQTT CRIUS®4.0 Instrument Controller CRIUS®4.0 is the first water quality analyzer anywhere in the […]

First Coagulation Controller installation for Pi in South America

Following on from the success of numerous water treatment plants in the UK and Ireland, Pi is now beginning to offer the CoagSense coagulation controller to other countries in the […]