LaMotte SMART Spectro Spectrophotometer - Manual (Page 175)

APPLICATION: Drinking, surface, and saline waters; domestic and
industrial wastes.
RANGE: 0.00–10.00 ppm
MDL: 0.07 ppm
METHOD: Ferric iron is reduced to ferrous iron and subsequently
forms a colored complex with for a quantitative measure
of total iron.
SAMPLE HANDLING
& PRESERVATION:
The sample container should be cleaned with acid and
rinsed with deionized water. Addition of acid to adjust
the sample. The pH 2-3 will prevent depositation of iron
on the container walls. Samples should be analyzed as
soon as possible.
INTERFERENCES: Strong oxidizing agents interfere, as well as copper and
cobalt in excess of 5.0 ppm.
IRON, UDV SMART Spectro Test Procedures 2.11
Test P
rocedures