Greenox Solution > AdBlue® > About AdBlue®

What is AdBlue?

AdBlue® is a high purity operating fluid, used in the emissions removal systems of diesel engined vehicles and equipment. Chemically speaking AdBlue® is a 32.5% solution of Urea in purifed water.

The AdBlue® is stored in a tank on the vehicle and from there dosed automatically by the ECU directly into the exhaust gas at a rate in relation to the amount of Nitrogen Oxides (NOx) being produced by the engine.



Following mixing, the AdBlue® and exhaust gas mixture passes into a catalyst system where a chemical reaction takes place converting the NOx to harmless Nitrogen and Water, which are then expelled from the end of the exhaust.

During the reaction the AdBlue® is consumed and needs to be replaced by refilling the tank periodically. AdBlue® consumption is related to engine load, engine size, travelling terrain and temperature.

Unrivalled experience Unbeatable service

The Tennant Group are the UK's leading independent chemical distributor, with origins dating back to 1790's. Tennants have a strong national presence, predominantly manufacturing & distributing chemicals. Today, Group annual turnover exceeds £500m, employing over 1000 people worldwide. With an extensive network of UK depots, Tennants are distributors for some of the world's leading chemical manufacturers, stocking over 2,500 products and manufacturer of Greenox® AdBlue®.

Tennants are primarily focused on the UK and Ireland, we have an extensive network of strategically located depots providing a fast nationwide delivery service, each accredited to ISO9001 and with their own fleets of delivery vehicles.

A passion for excellence

"Tennants manufacture AdBlue® across multiple UK sites to the highest standards"

We add value for our customers by being able to offer a wide variety of products in packaging formats most appropriate to their needs including bags, drums, IBC and bulk tanker quantities. Through years of working in partnership we have developed efficient supply chain solutions, vital for both customers and suppliers.