Oxygen Scavengers
© Hach Company, 2003. All rights reserved. Printed in the U.S.A. 3/04 1ed
Page 4 of 4 OxygenSca_PP_Other_IRD_Eng_Ody.fm
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Sensitivity
See Section 3.4.5 Sensitivity on page 44 for more information.
Summary of Method
Diethylhydroxylamine (DEHA) or other oxygen scavengers present in the
sample react with ferric iron in DEHA Reagent 2 Solution to produce ferrous ion
in an amount equivalent to the DEHA concentration. This solution then reacts
with DEHA 1 Reagent, which forms a purple color with ferrous iron
proportional to the concentration of oxygen scavenger. Test results are measured
at 562 nm.
Required Reagents
Quantity Required
Description per test Unit Cat. No.
Oxygen Scavenger Reagent Set (50 tests).....................................................................................................24466-00
Includes:
(2) DEHA Reagent 1 Powder Pillows .............................................2 pillows......... 100/pkg.............21679-69
(1) DEHA Reagent 2 Solution...........................................................1 mL ................ 500 mL...............21680-49
Hydrochloric Acid, 1:1 (6.0 N).......................................................................................... 500 mL...................884-49
Water, deionized .......................................................................................25 mL .............. 4 liters....................272-56
Required Apparatus
Dropper, 0.5 and 1.0-mL marks ..............................................................1....................... 20/pkg...............21247-20
Sample Cells, 10-20-25 mL, w/cap.........................................................2....................... 6/pkg.................24019-06
Program ∆Abs ∆Concentration
180 0.010 5 µg/L
181 0.010 3 µg/L
182 0.010 9 µg/L
183 0.010 13 µg/L
184 0.010 15 µg/L
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