Dissolved oxygen, O2
Measurements are made according to the Winkler method (reduction of O2 by Mn(II) followed by iodometric quantification of oxidised Mn). The endpoint is determined potentiometrically.
Known issues in the databases
Current method of measurement
Gäller från mars 2008
Method: SS EN 25813, 1st ed. (modified)
Instrument: Metrohm Titrator Titrino 785 DMP. Metrohm elektrod 6.0451.100, Pt/5-80 grader.
Previous methods
1987-08 – 2008-02
Method: Karlgren, L. 1961, Vattenkemiska analysmetoder (Hydrochemical Analytical Methods, In Swedish).
Instrument: Metrohm Titrator Dosimat 665.
1965-01 – 1987-07
Method: Karlgren, L. 1961, Vattenkemiska analysmetoder (Hydrochemical Analytical Methods, In Swedish).
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