Zetor FORTERRA HSX Series, Operator'S Manual, Page: 180 / 222

Urea (urea solution AUS 32)
Urea a highly pure aqueous urea 32.5% solution used as a reducing agent NOx for additional treatment of
exhaust gases.
The product is labelled as urea or AUS 32 (AUS: Aqueous Urea Solution).
Add only solution adhering to prescribed specifications.
Note:
The urea solution AUS 32 is known in USA and North America as Diesel Exhaust Fluid (DEF).
The lifetime of urea without the loss of the quality is influenced by storage conditions.
It crystallizes at -11°C and over +35°C it initiates hydrolytic reaction which means that a slow
decomposition to ammonia and carbon dioxide begins.
It is essential to protect unprotected vessels from direct sunlight.
Specification
DIN 70070
ISO 22241-1
ASTM D 7821
TRACTOR MAINTENANCE
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