Chlorine Dioxide
© Hach Company, 2003. All rights reserved. Printed in the U.S.A. 3/04 1ed
Page 4 of 4 ChlorineDio_PP_Low_CPR_Eng_Ody.fm
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FAX: (970) 669-2932
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Summary of Method
Chlorine Dioxide (ClO
2
) is determined by its combination with chlorophenol red
at pH 5.2 to form a colorless complex. The net effect is bleaching of the color in
an amount proportional to the chlorine dioxide concentration. The method is
specific for ClO
2
and is unreactive to other active chlorine or moderate oxidizing
compounds. Test results are measured at 575 nm.
Required Reagents
Quantity Required
Description Per Test Unit Cat. No
Chlorine Dioxide Reagent Set (100 Tests) ....................................................................................................22423-00
Includes:
(2) Chlorine Dioxide Reagent 1........................................................2 mL ................ 100 mL...............20700-42
(2) Chlorine Dioxide Reagent 2........................................................2 mL ................ 100 mL...............20701-42
(2) Chlorine Dioxide Reagent 3........................................................2 mL ................ 100 mL...............20702-42
(1) Dechlorinating Reagent Powder Pillows..................................1 pillow........... 100/pkg.............14363-69
Required Apparatus
Cylinder, graduated mixing, 50-mL.......................................................2 ....................... each......................1896-41
Pipet, volumetric, Class A, 1.00-mL.......................................................1 ....................... each....................14515-35
Pipet Filler, safety bulb ............................................................................1 ....................... each....................14651-00
Sample cells, 10-20-25 mL, w/cap..........................................................2....................... 6/pkg.................24019-06
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