Hach DR2400 - Page 398

Molybdenum, Molybdate
© Hach Company, 2003. All rights reserved. Printed in the U.S.A. 3/04 1ed
Page 6 of 6 Molybdenum_AVPP_High_MAA_Eng_Ody.fm
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FOR TECHNICAL ASSISTANCE, PRICE INFORMATION AND ORDERING:
Call 800-227-4224
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Summary of Method
MolyVer 1 and 2 Reagents are added to buffer and condition the sample.
MolyVer 3 provides the mercaptoacetic acid which reacts with molybdate
molybdenum to form a yellow color proportional to the molybdenum
concentration. Test results are measured at 420 nm.
Required Reagents Standards (Using Powder Pillows)
Quantity Required
Description per test Unit Cat. No.
Molybdenum Reagent Set, for 10-mL samples (100 tests).........................................................................26041-00
Includes:
MolyVer
®
1 Molybdenum Reagent Powder Pillows ....................1 pillow........... 100/pkg.............26042-99
MolyVer
®
2 Molybdenum Reagent Powder Pillows ....................1 pillow........... 100/pkg.............26043-99
MolyVer
®
3 Molybdenum Reagent Powder Pillows ....................1 pillow........... 100/pkg.............26044-99
Required Reagents (Using AccuVac Ampuls)
CDTA Solution, 0.4 M ..............................................................................4 drops............ 15 mL SCDB .....26154-36
MolyVer
®
6 Reagent AccuVac
®
Ampuls...............................................1 ampul........... 25/pkg...............25220-25
Required Apparatus
Beaker, 50-mL............................................................................................1 ....................... each.................... 500-41H
Sample Cells, 10-mL, w/cap...................................................................2 ....................... 6/pkg.................24276-06
Required Standards
Molybdenum Standard Solution, 10-mg/L as MoO
4
2–
................................................ 100 mL...............14187-42
Molybdate Standard Solution, 1000-mg/L as MoO
4
2–
................................................. 100 mL...............25962-42
Molybdenum Standard Solution, 1000-mg/L as Mo
6+
................................................. 100 mL...............14186-42
Water, deionized ................................................................................................................. 4 liters ....................272-56