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ISO 23820:2023

Determination of the filtration efficiency of urea filter modules

General information

Valid from 19.05.2023
Directives or regulations
None

Standard history

Status
Date
Type
Name
19.05.2023
Main
This document specifies requirements relating to the testing method for AUS 32/diesel exhaust fluid (DEF) filters for the removal of suspended matter. This applies to urea filters dedicated to passenger vehicles as well as to commercial vehicles. This method applies to filters with flow rates from 3 l/h to 30 l/h depending on the application (by default 5 l/h for passenger vehicles and 25 l/h for commercial vehicles). This method can be used for other flow rates, provided the validation requirement can be met.

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