Hach DR2400 - Pour-Thru Cell

DR/2400
Iron
IronTot_None_Other_FVR_Eng_Ody.fm Page 1 of 4
• If sample contains rust, see Interferences on page 2.
• Digestion is required for total iron determination.
• For more accurate results, determine a reagent blank value for each new lot of reagent. Follow the procedure using deionized
water in place of the sample. Subtract the reagent blank value from the final results or perform a reagent blank adjust. See the
instrument manual for more information on Running a Reagent Blank.
• If iron is present, a purple color will form after adding the reagent.
• Rinse glassware with a 1:1 HCl (Cat. No. 884-49) solution. Rinse again with deionized water. This will remove residual iron that
may interfere.
• FerroZine Iron Reagent may crystallize or precipitate when exposed to cold temperatures during shipment; reagent quality is not
affected. Place the reagent in warm water to re-dissolve.
• Install the Pour-Thru Cell into the adapter so that the long pathlength (1-in./25-mm) is parallel to the front of the instrument.
Iron
Method 8147
FerroZine
®
Rapid Liquid Method*
Pour-Thru Cell
(0.009 to 1.400 mg/L Fe)
Scope and Application: For boiler, cooling, and natural waters*
*Adapted from Stookey, L.L., Anal.Chem., 42 (7) 779 1970.
1. Touch
Hach Programs.
Select program
260 Iron, FerroZine RL.
Touch
Start.
2. Install the Pour-Thru
Cell and cell adapter in
the sample cell
compartment. Use the 25-
mm cell pathlength.
Note: See Section 2.6.1 on
page 26 in the Instrument
manual for installation details.
Flush with 50-mL of
deionized water.
3. Rinse two clean
125-mL Erlenmeyer
flasks with the sample
three times.
4. Rinse a clean 50-mL
plastic graduated
cylinder three times with
the sample.
Tips and Techniques
Pour-Thru Cell Method 8147
Hach Programs