Quote:
Originally Posted by brad
If I follow the directions literally, I stop when the color starts to change, not when it stops. But I have to wonder if this is correct.
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Kit designers have some decisions to make about when to call the titration complete, which also depends on the exact reagents used. If the directions say to stop when a color change begins, then that's where you should stop. The Salifert and IO kits said to stop the calcium test when the color turned blue, although the first big color change was to purple.