This test method covers in field testing, first tier, for contamination of the urea-based diesel exhaust fluid (DEF) prescribed for use in the diesel engines equipped with selective catalytic reduction technology and is not more accurate determination of contamination in laboratory methods prescribed in ISO-22241-2.
Keywordshydrocarbon, diesel exhaust fluid, water, urea, test strips, refractometer, contamination, solids, deionized
Hydrocarbon poisoning of DEF as defined in ISO 22241-1 range for insoluble matter is defined as 28.2 which amounts to approximately .705/US Gallon in a typical container of 2.5 gallon. A major cause of breakdown (reported to be up to 50% of instances) of Select Catalytic Reduction devices is contamination by hydrocarbons. Risk mitigation of contamination is possible with infield evaluating DEF prior to receipt, introduction, and after introduction to the system.
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Draft Under Development