Hach DR2400 - Page 368

Manganese
© Hach Company, 2003. All rights reserved. Printed in the U.S.A. 3/04 1ed
Page 4 of 4 Manganese_PP_High_POX_Eng_Ody.fm
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Method Performance
Precision
Standard: 10.0 mg/L Mn
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
Manganese in the sample is oxidized to the purple permanganate state by
sodium periodate, after buffering the sample with citrate. The purple color
is directly proportional to the manganese concentration. Test results are
measured at 525 nm.
Required Reagents
Quantity Required
Description per test Unit Cat. No.
High Range Manganese Reagent Set (100 Tests).........................................................................................24300-00
Includes:
Buffer Powder Pillows, citrate type for manganese......................1 pillow........... 100/pkg.............21076-69
Sodium Periodate Powder Pillows, for manganese......................1 pillow........... 100/pkg.............21077-69
Required Apparatus
Sample Cells, 10 mL, w/cap ...................................................................2 ....................... 6/pkg.................24276-06
Required Standards
Manganese Standard Solution, 1000-mg/L Mn............................................................. 100 mL...............12791-42
Manganese Standard Solution, 10-mL Voluette
®
Ampule, 250-mg/L Mn................ 16/pkg...............14258-10
Water, deionized ................................................................................................................. 4 liters ....................272-56
Program 95% Confidence Limits of Distribution
295 9.8–10.2 mg/L Mn
Portion of Curve ∆Abs ∆Concentration
0.010 abs 0.010 0.13 mg/L Mn
10 mg/L 0.010 0.14 mg/L Mn
18 mg/L 0.010 0.15 mg/L Mn