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Re: Lamotte Hardness Titration

>Date: Sat, 27 Jan 2001 16:01:45 -0600
>From: Larry Lampert <lala at jmkint_com>
>I have a question concerning the Lamotte hardness titration kits
>specifically the GH and Calcium kits. During the titration process the
>sample turns from red to purple and finally to a blue color upon the
>addition of the reagent.  At what point do you take the reading as a final
>end point.  When it first turns blue or until it stays blue for a period of
>time (how long)?

Take the reading when it turns blue and STAYS blue for 30 seconds.

George Booth in Ft. Collins, CO (booth at frii dot com)
The web site for Aquatic Gardeners by Aquatic Gardeners