The importance of chemical compatibility

Automated Water & Effluent Ltd develops tool to assist with specifying chemically compatible equipment.

In all aspects of the surface finishing sector chemical reagents are used from process control in pre-treatment right through to post treatment environments including pH control for effluent treatment.

As a mature engineering base the UK and Europe have stringent controls in place for chemical handling, which considering the impact that some commonly used chemical reagents can have has helped to ensure operator and environmental safety.

Manual handling has reduced as a direct result of the need for safer chemical handling as well as the search for precision control of chemical reagents in many processes. To ensure that control equipment can safely work with a chemical reagent, it’s important to ensure that any equipment in contact with the chemical reagent is chemically compatible.

As suppliers of sensors, instrumentation and control systems designed to measure or control chemical processes – the engineers at Automated Water & Effluent Ltd are all too familiar with the importance of ensuring that all the parts of equipment is chemically compatible with the reagent that’s being used.

Where a dosing pump might be manufactured with the head material in chemically resistant thermoplastic, it’s also important to ensure that the valve material, diaphragm, non-return valves and all the other ancillary parts are also chemically resistant.

With this in mind the engineers at Automated Water & Effluent Ltd have developed two tools to ensure that new devices such as chemical dosing pumps, sensors and valves are chemically compatible. 

For new devices we’ve listed a chemical and material compatibility database on our website available at or directly by going to

The chemical and material compatibility database can be interrogated either from a chemical or material perspective.

By selecting the chemical resistance tab from the chemical compatibility database, the user can simply search for the chemical reagent and the database will show the chemical resistance of commonly used materials in process control equipment.

Alternatively – by selecting the materials tab, you can enter the material that you are planning on using, which includes thermoplastics such as PVC & PVDF, spring materials such as Stainless Steel or Hastelloy C, as well as Valve and Seal materials like Ceramic, PTFE or Viton to find the chemical compatibility of that material against commonly used chemical reagents.

As a major supplier of chemical dosing pumps we now issue our pumps complete wth a chemically resistant label printed with a unique QR which relates to the dosing pumps construction. An operator can simply scan the QR with a cell phone or other compatible device and the reveal the full bill of materials, flow rates and power requirements for any dosing pump that we’ve supplied.

This has been designed to ensure that any additional equipment matches the wetted parts of the existing equipment to ensure compatibility.

While scanning a QR code brings convenience and simplifies sourcing spares and accessories we understand that in engineering environments it’s not always practical to scan a QR code. So we still ensure that we can track every pump that we supply with a simple phone call to our offices.

Telephone: +44 (0) 1785 254 597