Why are the reagents used in Winkler method added in definite sequence?

Subject: Why are the reagents used in Winkler method added in definite sequence?

Date: Fri Feb 11 07:20:27 2000
Posted by Diana
Grade level: undergrad School: University of the Philippines
City: Quezon City State/Province: No state entered. Country: Philippines
Area of science: Chemistry
ID: 950275227.Ch

Message:


According to our laboratory manual, we have to add the reagents used in 
the Winkler method for dissolved oxygen determination in order: Manganese
(II) sulfate, then Ammonium bicarbonate, then Sodium hydroxide.

Re: Why are the reagents used in Winkler method added in definite sequence?

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