Phosphorus, Reactive HR
• Replace the cap and mix by inverting each vial a couple of times.
• Place the blank vial into the holder and push it completely down.
• Press Timer and the display will show the countdown prior to the measurement and the “Reaction
Time” message. Alternatively, wait for 7 minutes and press Zero.
• The instrument will perform a zero sequence and after a few seconds the display will show “-0.0-”. Now
the meter is zeroed and ready for measurement.
• Remove the blank vial.
• Place the sample vial into the holder and push it completely down.
• Press Read. The instrument will perform the reading. The instrument displays concentration in mg/L of
phosphorus (P).
• Press s or t to convert the result in mg/L of phosphate (PO
4
3
-
) or mg/L of P
2
O
5
.
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