Hach Digesdahl 23130-20 - Page 55

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Iron, 1,10 Phenanthroline (Method 8008)
A = mg/L reading from instrument
B = mL sample amount from table
C = mL analysis volume from table
Iron, Ferrozine (Method 8147)
A = mg/L reading from instrument
B = mL sample amount from table
C = mL analysis volume from table
Expected Fe
conc. (mg/L)
Sample
amount (mL)
Analysis
Volume (mL)
Dilute to
0.15-8 40.0 20.0 25.0 mL
0.6-35 20.0 10.0 25.0 mL
2.5-125 10.0 5.00 25.0 mL
25-1250 5.00 1.00 25.0 mL
250-12500 1.00 0.50 25.0 mL
Expected Fe
conc. (mg/L)
Sample
amount (mL)
Analysis
Volume (mL)
Dilute to
0.07-4 40.0 20.0 25.0 mL
0.3-15 20.0 10.0 25.0 mL
1.1-65 10.0 5.00 25.0 mL
11-650 5.00 1.00 25.0 mL
110-6500 1.00 0.50 25.0 mL
A 2500×
BC×
------------------------ mg/L Total Fe=
A 2500×
BC×
------------------------ mg/L Total Fe=
DIGESTION PROCEDURE FOR AQUEOUS LIQUIDS, continued
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