127
Phosphorus
x 10
• Wait for a few seconds and the display
will show "-0.0-". Now the meter is
zeroed and ready for measurement.
• Remove the cuvet.
• Add 10 drops of HI 93706A Molybdate
reagent.
• Add the content of one packet of
HI 93706B-0 Phosphorus Reagent B
(Amino Acid) to the cuvet. Replace
the cap and shake gently until
dissolution is complete.
• Reinsert the cuvet into the instrument.
• Press TIMER and the display will show the countdown prior to the
measurement or, alternatively, wait for 5 minutes and press READ
DIRECT. In both cases "SIP" will blink during measurement.
• The instrument directly displays concentration in mg/L of phosphorus
on the Liquid Crystal Display.
INTERFERENCES
Interference may be caused by:
Sulfide
Chloride above 150000 mg/L
Calcium above 10000 mg/L as CaCO
3
Magnesium above 40000 mg/L as CaCO
3
Ferrous iron above 100 mg/L