Nitrate (NO
3
-
) Table
Nitrate results require the table below. Follow
eXact
®
Micro 7+ Nitrate (NO
3
-
)
Test Procedure
(above) using
eXact
®
Strip Micro NO
3
, Part No. 486655
NOTE:
For levels above 45ppm Nitrate, dilute the sample ½ or ¼ with distilled water and retest.
eXact
®
Strip Micro NO
3
, Part No. 486655 - for 4mL Samples
Rev. BT 040711
%T
90
80
70
60
50
40
30
20
10
0
9
8
7
6
5
4
3
2
1
0
5
Dip the
eXact
®
Strip Micro NO
3
, Part No. 486655
into the
CELL
and immediately press
READ
.
This starts the
20 SECOND
countdown timer. During this time move the strip in a very gentle
back and forth motion.
Remove and discard the strip after “1” on the display disappears*
.
The cursor will move across the display, while the meter prepares to measure the sample.
Time the reaction in the cell for
580 seconds
(timer not included). During this time, the meter
will shut off. When
580 seconds
have elapsed, turn meter on and wait for the display to show last
reading. Then, press
READ
ZKLFKZLOOVWDUWD¿QDO
20 SECOND
countdown. The cursor will
move across the display, while the meter prepares to measure the sample. Record result
displayed (this result is automatically stored in TR7).
DIP STRIP -
(read carefully and follow procedure closely)
6
Find the “TR7” result in the table below to determine the Nitrate concentration in ppm
(parts per million). (Example: a “TR7” result of 66.3 (use only the 66 for the chart) equals a
Nitrate value of 3.40 ppm). Record result. After testing is completed, rinse cell immediately
to remove zinc dust.
USE TABLE
4
Press the
ZERO/ON
button. The cursor will move across the display, followed by
100 %T
.
Sample is ready for testing.
ZERO METER*
1
Press the
ZERO/ON
button to power the meter on; the display will show all annunciators,
then the current MENU selection, followed by the last reading.
TURN METER ON
2
Press and re-press the
MENU
button until the display shows the parameter
TR7
.
SELECT TEST: TR7
3
Add sample water to the cell. For accurate results, brush the cell to remove any excess zinc
from previous tests. Rinse the
CELL
at least 3 times with the water sample you will be
testing - rinsing minimizes the potential for cross-contamination from a previous test. Finally,
¿OOFHOOWRFDSDFLW\POZLWKWKHZDWHUVDPSOH
FILL METER WITH SAMPLE
NOTE: Divide the above Nitrate result by 4.4 to determine Nitrate value as Nitrogen (NO
3
as N)
13
NO
3
Nitrate (NO
3
-
) Test Procedure
TR7
This table was calibrated using NO
3
-
Nitrate Standards
0
0
0
0
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
1.4
1.5
1.6
1.8
1.9
2
2.1
2.2
2.3
2.5
2.6
2.7
2.9
3
3.1
3.3
3.4
3.5
3.7
3.8
3.9
4.1
4.2
4.4
4.5
4.7
4.8
5
5.2
5.3
5.5
5.6
5.8
6
6.2
6.4
6.6
6.7
6.9
7.1
7.3
7.5
7.8
8
8.2
8.4
8.7
8.9
9.2
9.5
9.8
10.1
10.4
10.7
11.1
11.4
11.8
12.2
12.6
13.1
13.6
14.1
14.7
15.3
16
16.8
17.6
18.5
19.6
20.9
22.3
24
25.6
27.6
30
33
37.3
43
45
>45
>45
>45
>45
*
NOTE: When testing outdoors (sunlight), for best accuracy, use the Mixing Cap/Cell Cover when Zeroing and Reading the sample.
