Hach DR2400 - Page 259

Copper
Copper
Copper_PP_Low_POR_Eng_Ody.fm Page 5 of 6
Summary of Method
The porphyrin method is very sensitive to trace amounts of free copper. The
method is free from most interferences and does not require any sample
extraction or concentration before analysis. Interferences from other metals are
eliminated by the copper masking reagent. The porphyrin indicator forms an
intense, yellow-colored complex with any free copper present in sample. Test
results are measured at 425 nm.
Required Reagents
Quantity Required
Description per test Unit Cat. No.
Copper Reagent Set (100 Tests)......................................................................................................................26033-00
Includes:
(1) Copper Masking Reagent Powder Pillows...............................1 pillow........... 100/pkg.............26034-49
(2) Porphyrin 1 Reagent Powder Pillows .......................................2 pillows ......... 100/pkg.............26035-49
(2) Porphyrin 2 Reagent Powder Pillows .......................................2 pillows ......... 100/pkg.............26036-49
Nitric Acid Solution, 1:1 .................................................................................................... 500 mL.................2540-49
Required Apparatus
Sample Cells, 10-mL, w/cap...................................................................2 ....................... 6/pkg.................24276-06
Required Standards
Copper Standard Solution, 100-mg/L Cu....................................................................... 100 mL...................128-42
Water, deionized ................................................................................................................. 4 liters ....................272-56
Copper, Standard Solution, 10-mg/L Cu........................................................................ 100 mL...................129-32