4
HANDLING & PRESERVATION
Samples may be stored and refrigerated in plastic containers.
INTERFERENCES
The following substances produce a positive interference at the concentration given:
Chloride (Cl-)
7000 mg/L
Phosphate (PO
4
-3
)
16 mg/L
Hexametaphosphate (NaPO
3
)
6
1 mg/L
The following substances produce a negative interference at the concentration given:
Alkalinity (CaCO
3
)
5000 mg/L
Aluminum (Al
+3
)
0.1 mg/L
Iron (Fe
+3
)
10 mg/L
Sulfate (SO
4
-2
)
200 mg/L
Color and turbidity must be removed or compensated for in the procedure. Temperature
should be maintained within 5 degrees Celcius of room temperature.
ANALYSIS
PROCEDURE
1. Fill the Water Sample Collecting
Bottle (0688) with sample water.
2. Press and hold
until
colorimeter turns on.
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Testing Menu
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3. Press
ENTER
to select
Testing Menu
.
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