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AdBlue® 32.5 (DEF) is a high-purity solution of 32.5% urea and 67.5% deionized water, designed for Selective Catalytic Reduction (SCR) systems in diesel engines to convert nitrogen oxides (
) into nitrogen and water. Key synonyms include DEF (Diesel Exhaust Fluid), AUS 32 (Aqueous Urea Solution 32.5%), and ARLA32. It is widely used in modern diesel passenger cars, trucks, and off-road vehicles to meet stringent emission standards.
Key Details and Usage Examples:
- Purpose: Reduces harmful emissions, lowering pollution to comply with regulations.
- Usage Application: Used in all diesel vehicles equipped with an SCR system, often required to meet Euro 6 or other modern standards.
- Application Method: It is not added to the diesel fuel, but rather stored in a separate tank and injected into the exhaust gas stream.
- Consumption Rate: Approximately 1 to 3 liters per 1,000 km, depending on driving style and vehicle.
- Characteristics:
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What is a 32.5 DEF solution?
DEF is a 32.5 % solution of high-purity, synthetically manufactured urea in de-mineralized water. It is a safe-to-use fluid. Diesel exhaust fluid (DEF) is used in diesel engines with SCR systems to reduce emissions.
Diesel Exhaust Fluid | Yara International
Yara
https://www.yara.com › industrial-nitrogen › diesel-exha...
Yara
https://www.yara.com › industrial-nitrogen › diesel-exha...
What is a good AdBlue percentage?
In general, you can expect consumption to be between 5% to 15% of the diesel consumption. In other words, you will use about 10 litres of AdBlue for every 100 litres of diesel. Therefore you will be filling your AdBlue tank less frequently than your tank for diesel.
Greenox Solution > AdBlue® > Consumption
Greenox®...the AdBlue® solution
https://greenoxsolution.co.uk › AdBlue › Consumption
Greenox®...the AdBlue® solution
https://greenoxsolution.co.uk › AdBlue › Consumption
Is AdBlue the same thing as DEF?
It doesn't mix with diesel fuel and is stored in a separate tank. DEF and AdBlue are effectively the same thing. This is because AdBlue is simply a brand name used in Europe for the standardised diesel exhaust fluid.Feb 25, 2026
What is AdBlue? Why does your car need it? | RAC Drive
RAC
https://www.rac.co.uk › drive › advice › emissions › adb...
RAC
https://www.rac.co.uk › drive › advice › emissions › adb...
What is 32.5% urea?
Liquid solution composed of high purity urea and deionized water. It is mostly used in flue gas purification technologies, allowing important reductions of nitrogen oxides (NOx) emissions.
Urea solution 32.5% - Azomureș
Azomureș
https://www.azomures.com › urea-325
Azomureș
https://www.azomures.com › urea-325
Web results
6 things to know about AdBlue®, DEF, AUS32, ARLA32
Palamatic Process
https://www.palamaticprocess.com › en-us › blog › six-...
Palamatic Process
https://www.palamaticprocess.com › en-us › blog › six-...
AdBlue is composed of 32.5% urea and 67.5% demineralized water. Invented in 1828, Urea is a synthetic product derived from ammonia.Read more
Diesel exhaust fluid
Wikipedia
https://en.wikipedia.org › wiki › Diesel_exhaust_fluid
Wikipedia
https://en.wikipedia.org › wiki › Diesel_exhaust_fluid
Diesel exhaust fluid (DEF; also known as AUS 32 and sometimes marketed as AdBlue [3] ) is a liquid used to reduce the amount of air pollution created by a ...Read more
DEF | AUS32 | AdBlue | Purchase Diesel Exhaust Fluid
BuySinopec.com
https://buysinopec.com › News
BuySinopec.com
https://buysinopec.com › News
Feb 16, 2016 — This product is a 32.5% solution designed for use in diesel engines with SCR technology. That is clear, non-toxic and safe to handle. http ...Read more
1–3 day delivery7-day returns
ISO 22241 standard AdBlue Diesel exhaust fluid Urea ...
Guangzhou EverBlue Technology Co.,Ltd.
http://www.everbluesolution.com › Other products
Guangzhou EverBlue Technology Co.,Ltd.
http://www.everbluesolution.com › Other products
AdBlue is a high purity transparent liquid consisting of 32.5% high purity urea and 67.5% deionized water, with a slight odor of ammonia water.Read more
What is AdBlue® / DEF / ARLA 32 ? - AdBule | Diesel engine ...
諾瓦材料
https://ad.novax-material.com › product › clsdetail
諾瓦材料
https://ad.novax-material.com › product › clsdetail
The most important part of the SCR system is the AdBlue® /DEF/ ARLA 32, it is a 32.5% concentration of urea mixed with distilled water. The AdBlue® / DEF ...Read more
ADBLUE (AUS32) UREA SOLUTION, DIESEL EXHAUST ...
techmation.com
https://www.techmation.com › uploads › 2015/10
techmation.com
https://www.techmation.com › uploads › 2015/10
PDF
As the name AUS32 suggests, AdBlue is made by using urea mixed with demineralised water resulting in a 32.5 % aqueous urea solution. It is colorless, non-toxic ...Read more
2 pages
Def Diesel Exhaust Fluid/ AUS32 Automotive Urea Solution ...
Shandong New Blue Environmental Protection Technology Co.,Ltd
https://www.newbluechina.com › adblue-def-aus32-arla32
Shandong New Blue Environmental Protection Technology Co.,Ltd
https://www.newbluechina.com › adblue-def-aus32-arla32
Also known as Automotive Urea Solution. It is a urea aqueous solution with a concentration of 32.5% and a solvent of ultrapure water.Read more
Reliable AdBlue DEF (Diesel Exhaust Fluid) for Vehicles
Fleetguard Filtrum
https://www.fleetguard-filtrum.com › filtrum-def
Fleetguard Filtrum
https://www.fleetguard-filtrum.com › filtrum-def
Filtrum DEF Diesel Exhaust Fluid (DEF) also known as AUS 32, Adblue, is an aqueous solution of technical grade Urea (32.5%) and Deionized water (67.5%).Read more
