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1.1 ,These test methods cover the determination of iron in water. Procedures are given for determining total iron, dissolved iron, and ferrous iron. Undissolved iron may be calculated from the total iron and dissolved iron determinations. The test methods are given as follows:
| , | Range | Sections |
| Test Method A—,Atomic Absorption, | ,0.1 to 5.0 mg/L | ,7 to 16 |
| Test Method B—,Atomic Absorption, | ,5 to 100 μ,g/L | 17 to 26 |
| Test Method C—,Photometric | 40 to 1000 μ,g/L | 27 to 38 |