T/NAIA 0139-2022 Active Group standards

T/NAIA 0139-2022 Diesel engine nitrogen oxide reducing agent - Urea water solution (AUS 32) Determination of urea content - Automatic Kjeldahl nitrogen analyzer method

Publish Date: 2022-08-15 Implement Date: 2022-08-31 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/NAIA 0139-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Chemical analysis

Publish Date: 2022-08-15

Implement Date: 2022-08-31

Scope

Main technical content: This document specifies the determination of urea content in urea aqueous solution (AUS 32), a nitrogen oxide reduction agent for diesel engines, using the fully automatic Kjeldahl nitrogen analyzer. This document is applicable to the determination of urea content in urea aqueous solution (AUS 32), a nitrogen oxide reduction agent used in selective catalytic reduction systems for diesel vehicles. When the urea content in the urea aqueous solution is between 30.0% and 35.0% (by mass), this method can be used for determination