Hach DR2400 Manual page 798

Zinc
Method Performance
Summary of Method
Required Reagents
Description
Zinc - Zn, UniCell™ HCT 170
Optional Apparatus
Flask, volumetric, 100-mL ................................................................................................. each....................14574-42
Graduated cylinder, mixing, 100-mL............................................................................... each....................20886-42
Pipettor, (Jencons) 1–5 mL................................................................................................. each....................27951-00
Replacement tips for 27951-00 .......................................................................................... pk/100...............27952-00
Pipettor, (Jencons) 100–1000 µL ........................................................................................ each....................27949-00
Replacement tips for 27949-00 .......................................................................................... pk/400...............27950-00
pH Paper .............................................................................................................................. pk/100...............26013-00
Required Apparatus
Adapter, 16-mm Cell .......................................................................................................... each....................59457-00
Optional Reagents
Nitric Acid Solution, 1:1 .................................................................................................... 500 mL.................2540-49
Sulfuric Acid Standard Solution, 1.00 N ......................................................................... 1 L ........................1270-53
Sodium Hydroxide, 5 N..................................................................................................... 1 L ........................2450-53
Zinc Standard Solution, 1000-mg/L as Zn ..................................................................... 100 mL...............14177-42
* Available in Europe only
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Page 4 of 4
Precision
Standard: 2.00 mg/L Free Zn
Program
809
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
Program
809
809
809
See Section 3.4.5 Sensitivity on page 44 for more information.
Zinc ions form a water soluble orange-red complex with
4-(2-pyridylazo)-resorcinol (PAR) at pH 5. The results are measured at 490 nm.
*
......................................................................................... 23/pkg.............. HCT 170
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Contact the HACH office or distributor serving you.
www.hach.com ; E-mail – techhelp@hach.com
95% Confidence Limits of Distribution
1.63–2.37 mg/L Free Zn
Portion of Curve
1.00
3.00
5.00
∆Abs ∆Concentration
0.010 0.085 mg/L Free Zn
0.010 0.087 mg/L Free Zn
0.010 0.090 mg/L Free Zn
Unit
HACH COMPANY
WORLD HEADQUARTERS
Telephone: (970) 669-3050
FAX: (970) 669-2932
Zinc_UniCell_Other_PAR_Eng_Ody.fm
Cat. No.
3/04 1ed