22
METHOD PROCEDURE
• Press
Read
. The display will show a 5 minute countdown prior to the measurement.
To skip the timer, press
Read
twice
.
When the timer ends the meter will perform the
reading. The instrument displays concentration in
mg/L
of
molybdenum (Mo
6+
).
• Press the
key and use the functional keys to select
Chemical Form
.
• Use the functional keys and press
Select
to change the displayed chemical formula
to
mg/L
of
molybdate (MoO
4
2-
)
and
sodium molybdate (Na
2
MoO
4
)
.
INTERFERENCES
Interference may be caused by:
• Chromium above 1000 mg/L
• Sulfate above 200 mg/L
• Aluminum, Iron, Nickel above 50 mg/L
• Copper above 10 mg/L
• Nitrite must be absent
• Highly-buffered samples or samples with extreme pH may exceed the buffering
capacity of the reagents