Name: ASTM D 7821 : 2012
Brand: ASTM
Price: 66.00 USD

ASTM D 7821 : 2012

Superseded

View Superseded by

Standard Test Method for Field Test Determination of Urea Concentration in Diesel Exhaust Fluid (DEF)

Available format(s)

Hardcopy , PDF

Superseded date

09-02-2020

Language(s)

English

Published date

10-01-2012

Publisher

American Society for Testing and Materials

This test method covers a technique for field testing the concentration of aqueous urea-based diesel exhaust fluid (DEF) prescribed for use in diesel engines equipped with selective catalytic reduction technology and is not intended to circumvent or replace the more accurate determination of urea content by refractive index laboratory method, described in ISO 22241-2, Annex C.

1.1This test method covers a technique for field testing the concentration of aqueous urea-based diesel exhaust fluid (DEF) prescribed for use in diesel engines equipped with selective catalytic reduction technology and is not intended to circumvent or replace the more accurate determination of urea content by refractive index laboratory method, described in ISO 22241-2, Annex C .

1.2This test method is designed solely as a quantitative test to determine the concentration of urea in DEF and does not purport to determine the quality of DEF nor to detect trace or other contaminants therein. Biuret content of DEF creates a known bias in this test method. See section 9.2.1 for details.

1.3Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.

1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Committee	D 15
DocumentType	Test Method
Pages	3
PublisherName	American Society for Testing and Materials
Status	Superseded
SupersededBy	ASTM D 7821 : 2012 : R2018

ISO 22241-2:2006	Diesel engines NOx reduction agent AUS 32 Part 2: Test methods
ISO 22241-3:2017	Diesel engines — NOx reduction agent AUS 32 — Part 3: Handling, transportation, and storage
ISO 22241-1:2006	Diesel engines NOx reduction agent AUS 32 Part 1: Quality requirements
ISO 22241-4:2009	Diesel engines NOx reduction agent AUS 32 Part 4: Refilling interface