Hach DR2400 - Page 122

Boron
© Hach Company, 2003. All rights reserved. Printed in the U.S.A. 3/04 1ed
Page 6 of 6 Boron_PP_Low_AZO_Eng_Ody.fm
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3. Touch On. Touch Adjust to accept the displayed concentration (the value
depends on the selected chemical form). If an alternate concentration is used,
touch the number in the box to enter the actual concentration, then touch
OK.
Touch
Adjust.
See Section 3.2.4 Adjusting the Standard Curve on page 40 for more information.
Method Performance
Precision
Standard: 0.30 mg/L B
3+
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
Azomethine-H, a Schiff base, is formed by the condensation of an
aminonaphthol with an aldehyde by the catalytic action of boron.
Test results are measured at 410 nm.
Required Reagents
Quantity Required
Description Per Test Unit Cat. No.
BoroTrace™ Reagent Set.................................................................................................................................26669-00
Includes:
EDTA Solution, 1 M ...........................................................................20 drops.......... 50 mL SCDB .....22419-26
BoroTrace™ #2 Reagent Powder Pillows........................................2....................... 100/pkg.............26666-69
BoroTrace™ #3 Reagent Powder Pillows........................................2....................... 100/pkg.............26667-99
Water, Ultra-Pure, Aldehyde-Free ...................................................25 mL .............. 500 mL...............25946-49
Required Apparatus
Cell, sample, 25-10 mL/1-cm..................................................................2 ....................... 2/pkg.................48643-02
Required Standards
Boron Standard Solution, 10-mL Voluette
®
Ampule, 250-mg/L B ............................. 16/pkg.............. 14249-10
Boron Standard Solution, 1000-mg/L as B ..................................................................... 100 mL.................1914-42
Program 95% Confidence Limits of Distribution
45 0.23–0.37 mg/L B
Portion of Curve ∆Abs ∆Concentration
Entire range 0.010 0.01 mg/L B