LaMotte SMART Spectro Spectrophotometer User Manual
Page 141
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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°C of room temperature.
Fluoride 1/3
SMART SPECTRO TEST PROCEDURES 05.04
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