Kinetic chlorine measurement

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United States of America Patent

PATENT NO 9746451
SERIAL NO

14677718

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Abstract

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An aspect provides a method of determining a concentration of free chlorine in an aqueous sample, including adding a reagent to the sample, the reagent being reactive with the free chlorine at a first kinetic rate and reactive with at least one chloramine at a second kinetic rate, the first kinetic rate being different from the second kinetic rate; measuring an absorbance response over time resulting from reaction of the free chlorine and the at least one chloramine with the reagent over time; and determining the concentration of the free chlorine in the sample based on a determined rate of change of the absorbance response over time. Other aspects are described and claimed.

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Patent Owner(s)

Patent OwnerAddress
HACH COMPANY5600 LINDBERGH DRIVE P O BOX 389 LOVELAND CO 80539

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Harmon, Brian Loveland, US 7 29
Lu, Zhao Fort Collins, US 23 156
West, Kevin J Loveland, US 1 1

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