Hanna Instruments HI 96713 - Manual (Page 14)

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• Alternatively, wait for 3 minutes then just
press READ/ /TIMER. In all cases, the
lamp, cuvette and detector icons will
appear on the display, depending on the
measurement phase.
• At the end of measurement, the instrument
directly displays concentration in mg/L of
phosphate on the LCD.
• To convert the reading to mg/L of
phosphorus pentoxide (P
2
O
5)
, multiply by
a factor of 0.747.
• To convert the reading to mg/L of
phosphorus (P) concentration, multiply
by a factor of 0.326.
INTERFERENCES:
Interference may be caused by:
Iron above 50 mg/L
Silica above 50 mg/L
Silicate above 10 mg/L
Copper above 10 mg/L
Hydrogen sulfide, arsenate, turbid sample and highly buffered samples also interfere.