Hanna Instruments HI83300 - Page 133

133
NITRATE
• Press the Chem Frm key to convert the result to mg/L of nitrate (NO
3
¯).
•Press  or  to return to the measurement screen.
INTERFERENCES
Interference may be caused by:
Ammonia and amines, as urea and primary aliphatic amines
Chloride above 100 ppm
Chlorine above 2 ppm
Copper
Iron(III)
Strong oxidizing and reducing substances
Sulfide must be absent