63
• Reinsert the cuvette into the instrument and close the lid.
• Press
Timer
and the display will show the countdown prior to the measurement or, alternatively,
wait for 15 minutes and press
Read.
When the timer ends the meter will perform the reading.
The instrument displays concentration in
µg/L of nitrite-nitrogen (NO
2
-
-N).
• Press
or
to access the second level functions.
• Press the
Chem Frm
key to convert the result to
µg/L of nitrite (NO
2
¯) and sodium nitrite
(NaNO
2
).
• Press
or
to return to the measurement screen.
INTERFERENCES
Interference may be caused by the following ions: ferrous, ferric, cupric, mercurous, silver,
antimonious, bismuth, auric, lead, metavanadate and chloroplatinate.
Strongly reducing and oxidizing reagents.
High levels of nitrate (above 100 mg/L) could yield falsely high readings due to a minute amount
of reduction to nitrite that could occur at these levels.
NITRITE
, MARINE UL
TRA LOW RANGE
