LaMotte SMART Spectro Spectrophotometer - Manual (Page 132)

COLOR
PLATINUM COBALT METHOD
NO REAGENTS REQUIRED
Color in water may be attributed to humus, peat, plankton, vegetation, and natural
metallic ions, such as iron and manganese, or industrial waste. Color is removed
to make water suitable for domestic and industrial use. Color may have to be
removed from industrial waste before it is discharged to a waterway.
APPLICATION: Potable water and water with color due to natural
materials.
RANGE: 0–1,000 color units
MDL: 15 cu
METHOD: Color is determined by a meter that has been calibrated
with colored standards of known platinum cobalt
concentration. True color, the color of water in which the
turbidity has been removed, is measured.
SAMPLE HANDLING &
PRESERVATION:
Collect all samples in clean glassware. Determine color
as soon as possible to avoid biological or chemical
changes that could occur in the sample during storage.
INTERFERENCES: Turbidity will interfere. Filter before testing.
SMART Spectro Test Procedures 2.11 COLOR
Test P
rocedures