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Status : Active
Standard Type : Main
Document No : ISO 1431-3:2017
Document Year : 2017
Pages : 22
Edition : 2
Section Volume : Testing and analysis (ISO/TC 45/SC 2.)
Method A ? UV absorption: this is the reference method, and is used as the means of calibration for the alternative methods B and C.
Method B ? Instrumental techniques:
B1: electrochemical
B2: chemiluminescence
Method C ? Wet-chemical techniques:
Procedure I
Procedure II
Procedure III