ISO 22241-2:2019
Diesel engines — NOx reduction agent AUS 32 — Part 2: Test methods
This document specifies test methods required for determination of the quality and chemical characteristics of NOx reduction agent AUS 32 (aqueous urea solution) as specified in ISO 22241-1.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Specifications
5 Sampling
6 Precision and dispute
Annex A (normative) Sampling
Annex B (normative) Determination of urea content by total nitrogen
Annex C (normative) Refractive index and determination of urea content by refractive index
Annex D (normative) Determination of alkalinity
Annex E (normative) Determination of biuret content
Annex F (normative) Determination of aldehyde content
Annex G (normative) Determination of insoluble matter content by gravimetric method
Annex H (normative) Determination of phosphate content by photometric method
Annex I (normative) Determination of trace element content (Al, Ca, Cr, Cu, Fe, K, Mg, Na, Ni, P and Zn) by ICP-OES method
Annex J (informative) Determination of identity by FTIR spectrometry method
Annex K (informative) Precision of test method
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Specifications
5 Sampling
6 Precision and dispute
Annex A (normative) Sampling
Annex B (normative) Determination of urea content by total nitrogen
Annex C (normative) Refractive index and determination of urea content by refractive index
Annex D (normative) Determination of alkalinity
Annex E (normative) Determination of biuret content
Annex F (normative) Determination of aldehyde content
Annex G (normative) Determination of insoluble matter content by gravimetric method
Annex H (normative) Determination of phosphate content by photometric method
Annex I (normative) Determination of trace element content (Al, Ca, Cr, Cu, Fe, K, Mg, Na, Ni, P and Zn) by ICP-OES method
Annex J (informative) Determination of identity by FTIR spectrometry method
Annex K (informative) Precision of test method
Bibliography