Hach DR2400 - Page 316

Hydrazine
© Hach Company, 2003. All rights reserved. Printed in the U.S.A. 3/04 1ed
Page 4 of 4 Hydrazine_AccuVac_Other_PDA_Eng_Ody.fm
HACH COMPANY
WORLD HEADQUARTERS
Telephone: (970) 669-3050
FAX: (970) 669-2932
FOR TECHNICAL ASSISTANCE, PRICE INFORMATION AND ORDERING:
Call 800-227-4224
Contact the HACH office or distributor serving you.
www.hach.com techhelp@hach.com
In the U.S.A. –
Outside the U.S.A. –
On the Worldwide Web – ; E-mail –
toll-free
Method Performance
Precision
Standard: 100 µg/L N
2
H
4
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
Hydrazine in the sample reacts with the p-dimethylaminobenzaldehyde from
the HydraVer 2 Reagent to form a yellow color which is proportional to the
hydrazine concentration. Test results are measured at 455 nm.
Required Reagents
Quantity Required
Description per test Unit Cat. No.
HydraVer
®
2 Hydrazine Reagent ....................................................1 mL ................ 100 mL MDB.......1790-32
or Hydrazine Reagent AccuVac
®
Ampuls ..........................................2....................... 25/pkg...............25240-25
Water, deionized .......................................................................................10 mL .............. 4 liters ....................272-56
Required Apparatus (Using Solution)
Sample Cells, 10-mL, w/cap...................................................................2 ....................... 6/pkg.................24276-06
Cylinder, graduated, 25-mL ....................................................................1 ....................... each........................508-40
Required Apparatus (Using AccuVac
®
Ampuls)
Beaker, 50-mL............................................................................................2 ....................... each.................... 500-41H
Required Standards
Hydrazine Sulfate, ACS..................................................................................................... 100 g.......................742-26
Program 95% Confidence Limits of Distribution
231 94–106 µg/L N
2
H
4
232 97–103 µg/L N
2
H
4
Program Portion of Curve ∆Abs ∆Concentration
231 Entire range 0.010 4 µg/L N
2
H
4
232 Entire range 0.010 4 µg/L N
2
H
4