Hanna Instruments HI 96717C - Manual (Page 8)

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• Press ZERO/CFM and the lamp, cuvette
and detector icons will appear on the
display, depending on the measurement
phase.
• After a few seconds, the display will show
“-0.0-” . The meter is now zeroed and
ready for measurement.
• Remove the cuvette.
• Add 10 drops of HI 93717A-0 Phosphate
reagent A to the cuvette.
• Add the content of one packet of
HI 93717B-0 Phosphate reagent B to
the cuvette. Replace the cap and shake
gently until dissolution is complete.
• Replace the cuvette into the cuvette holder
and ensure that the notch on the cap is
positioned securely into the groove.
• Press and hold READ/ READ/ READ/ READ/ READ/ /TIMER /TIMER /TIMER /TIMER /TIMER for three
seconds. The display will show the
countdown prior to measurement. The
beeper is playing a beep at the end of
countdown period.
Alternatively, wait for 5 minutes and just
press READ/
READ/ READ/ READ/ READ/ /TIMER /TIMER /TIMER /TIMER /TIMER.
In both 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.
INTERFERENCES
Calcium (Ca
2+ ): above 10,000 mg/L as CaCO
3
Chloride (Cl - ): above 150,000 mg/L as Cl -
Ferrous iron (Fe 2+ ): above 100 mg/L as Fe 2+
Magnesium (Mg 2+ ): above 40,000 mg/L as CaCO
3
Sulfide (S 2+ )
VALIDATION PROCEDURE
Use the validation procedure to ensure that the instrument is properly calibrated.
Warning:
Do not validate the instrument with any standard solutions other than the HANNA CAL
CHECK TM Standards, otherwise erroneous results will be obtained.
• Turn the meter on by pressing ON/OFF.
• Place the CAL CHECK TM Standard
HI 96717-11 Cuvette A into the cuvette
holder and ensure that the notch on the
cap is positioned securely into the groove.
• When the beeper sounds briefly and the
LCD displays dashes, the meter is ready.