Contact Us

Experts are on hand

Connecting You with Chemical Manufacturing Experts

Welcome to the Contact Us page of Online Reagents, the UK’s experts in chemical manufacturing. With a rich history spanning over 52 years, we’ve been at the forefront of delivering high-quality, bespoke chemical solutions to a diverse range of sectors. Our team of dedicated professionals is always ready to assist you with any queries or provide you with more information about our products and services. Don’t hesitate to reach out to us; we’re here to help.

Talk to us

Call us on 01484 843 708

E-mail us

You can also contact us directly at [email protected]

Write to us

Process Measurement and Analysis Ltd, Brook Mills House, Carr Lane, Slaithwaite, Huddersfield, HD7 5BG, United Kingdom


We would love to hear your thoughts on how we’re doing in order to help us improve our services. You can reach us at [email protected]


If you choose to drive to our Head Office in Slaithwaite, there are plenty of parking spaces on or around our site.

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By Train

Slaithwaite train station is a pleasant 7 minute walk to where we are. If you prefer, when you arrive we can also collect you.

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All great relationships start with a conversation.

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

Reach out to us through our online contact form for reagent inquiries, and you’ll be automatically entered into our prize draw for a chance to win an Apple HomePod! This is a unique opportunity to enhance your production experience while enjoying cutting-edge audio technology.

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Online Reagents

Where Measurement, Meets Technology.

Process Measurement and Analysis are the UK’s leading supplier of specialist online water instrumentation and chemical reagents and buffers. Our dedicated instrument service team can offer advice and call out to ensure reliable monitor operation so your processes are protected. In our dedicated facility located in Slaithwaite, West Yorkshire we have the equipment and certification to manufacture a wide range of specialist chemical solutions across a number of industries.


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In compliance with ISO/TS 1004:2012: Quality Management System Guidelines