Hach DR/700 Procedures Manual page 535

Colorimeter
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NITRITE, HR,
10.
Invert the
prepared sample
twice. Then place the
prepared sample in
the cell holder.
Note: In bright sunlight
it may be necessary to
close the cell
compartment cover.
Table 1. Conversion Factors
To convert reading from
mg/L NO
-
2
mg/L NO
-
2
continued
11.
Press:
READ
The display will
count down to 0.
Then the display will
show the results in
mg/L nitrite.
Note: To convert results
to other units, see Table 1.
To
Multiply by
mg/L NO
-N
0.3
2
mg/L NaNO
1.5
2
57-29

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