Marine Phosphate ULR
34
• Press
Read
. The display will show a 3 minute countdown prior to the measurement. To skip the timer,
press
Read
. When the timer ends, the meter will perform the reading. The instrument displays the results
in
ppm
of
phosphate (PO
4
3
¯).
• Press the
key and use the functional keys to select
Chemical Form
.
• Use the functional keys and press
Select
to change displayed chemical formula to
ppm
of
phosphorus (P).
INTERFERENCES
Interference may be caused by:
• Iron, Silica above 50 ppm
• Copper, Silicate above 10 ppm
• Hydrogen sulfide, arsenate, turbid sample, and highly buffered samples