Hach DR2400 - Page 328

Iron
© Hach Company, 2003. All rights reserved. Printed in the U.S.A. 3/04 1ed
Page 4 of 4 Iron_UniCell_Other_PHEN_Eng_Ody.fm
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Summary of Method
Iron (II) ions form an orange-red complex with 1,10-phenanthroline. Any
iron (III) ions present in the water sample are reduced to iron (II) ions by ascorbic
acid before the complex is formed. Measurements are taken at 485 nm.
Required Reagents
Description Unit Cat. No.
Iron - Fe, UniCell™ HCT 159............................................................................................ 23/pkg.............. HCT 159
Required Apparatus
Adapter, 16-mm Cell .......................................................................................................... each....................59457-00
Flask, volumetric, 100-mL ................................................................................................. each....................14574-42
Graduated cylinder, mixing, 100-mL............................................................................... each....................20886-42
pH Paper.............................................................................................................................. pkg/100.............26013-00
Pipettor, (Jencons) 1–5 mL................................................................................................. each....................27951-00
Replacement tips for 27951-00 .......................................................................................... pkg/100.............27952-00
Pipettor, (Jencons) 100–1000 µL........................................................................................ each....................27949-00
Replacement tips for 27949-00 .......................................................................................... pkg/400.............27950-00
Optional Reagents
Description Unit Cat. No.
Iron Standard 1000-mg/L as Fe........................................................................................ 100 mL.................2271-42
Metal-Prep-Set HCT 200.................................................................................................... 50 digestions.... HCT 200
Nitric Acid Solution, 1:1 .................................................................................................... 500 mL.................2540-49
Sodium Hydroxide, 5 N..................................................................................................... 1L .........................2450-53