Hach DR2400 - Page 324

Iron
© Hach Company, 2003. All rights reserved. Printed in the U.S.A. 3/04 1ed
Page 4 of 4 Iron_PP_Other_FEZ_Eng_Ody.fm
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Method Performance
Precision
Standard: 1.0 mg/L Fe
See Section 3.4.3 Precision on page 44 for more information, or if the standard
concentration did not fall within the specified range.
Sensitivity
See Section 3.4.5 Sensitivity on page 44 for more information.
Summary of Method
The FerroZine
®
Iron Reagent forms a purple-colored complex with trace
amounts of iron in samples that are buffered to a pH of 3.5. This method is
applicable for determining trace levels of iron in chemical reagents and glycols
and can be used to analyze samples containing magnetite (black iron oxide) or
ferrites. Test results are measured at 562 nm.
Required Reagents
Quantity Required
Description per test Unit Cat. No.
FerroZine
®
Iron Reagent Solution..........................................................0.5 .................... 1000 mL...............2301-53
or
FerroZine
®
Iron Reagent Solution Pillows ...........................................1 pillow........... 50/pkg.................2301-66
Required Apparatus
Clippers, for opening powder pillows ..................................................1 ....................... each........................968-00
Sample Cells, 10-20-25 mL, w/cap.........................................................2....................... 6/pkg.................24019-06
Optional Reagents and Standards
Iron Standard Solution, 100-mg/L Fe.............................................................................. 100 mL...............14175-42
Iron Standard Solution, 10-mL Voluette
®
Ampule, 25-mg/L Fe................................. 16/pkg...............14253-10
Water, deionized ................................................................................................................. 4 liters ....................272-56
Program 95% Confidence Limits of Distribution
260 0.990–1.010 mg/L Fe
Portion of Curve ∆Abs ∆Concentration
Entire range 0.010 0.009 mg/L Fe