Hanna Instruments HI 83207-01 - Manual (Page 45)

45
INTERFERENCES
Interference may be caused by:
Co
2+ must not be present
Fe 2+ must not be present
Al 3+ above 32 mg/L
Ca 2+ above 1000 mg/L (as CaCO
3
)
Cd 2+ above 20 mg/L
Cl¯ above 8000 mg/L
Cr
3+ above 20 mg/L
Cr 6+ above 40 mg/L
Cu 2+ above 15 mg/L
F¯ above 20 mg/L
Fe
3+ above 10 mg/L
K + above 500 mg/L
Mg 2+ above 400 mg/L
Mn 2+ above 25 mg/L
Mo 6+ above 60 mg/L
Na + above 5000 mg/L
Pb 2+ above 20 mg/L
Zn 2+ above 30 mg/L
Nickel LR