LaMotte DC1600 Colorimeter User Manual
Page 64
PROCEDURE
1.
Rinse a clean colorimeter tube (0967) with sample water. Fill to the 10 mL line with sample. This tube is the BLANK.
2.
Select setting 2 on “Select Wavelength” knob and press “30 Second Read” button.
3.
Insert tube into colorimeter chamber and adjust to 100%T with “Set Blank” knob. This is the 100%T blank.
4.
Remove BLANK from colorimeter and insert SAMPLE tube into colorimeter chamber. Record %T as soon as reading
stabilizes.
5.
Consult calibration chart to determine dissolved oxygen concentration in parts per million (ppm).
DC1600 DISSOLVED OXYGEN CALIBRATION CHART
%T
9
8
7
6
5
4
3
2
1
0
90
0.0
0.1
0.1
0.2
0.2
0.3
0.3
0.3
0.4
0.4
80
0.5
0.5
0.6
0.6
0.7
0.7
0.8
0.8
0.9
0.9
70
1.0
1.0
1.1
1.1
1.2
1.2
1.3
1.3
1.4
1.4
60
1.5
1.6
1.6
1.7
1.7
1.8
1.9
1.9
2.0
2.1
50
2.1
2.2
2.3
2.4
2.4
2.5
2.6
2.7
2.7
2.8
40
2.9
3.0
3.1
3.1
3.2
3.3
3.4
3.5
3.6
3.7
30
3.8
3.9
4.0
4.1
4.3
4.4
4.5
4.6
4.7
4.9
20
5.0
5.2
5.3
5.5
5.6
5.8
6.0
6.1
6.3
6.5
10
6.7
7.0
7.2
7.4
7.7
8.0
8.3
8.6
8.9
9.3
0
9.8
10.2
10.8
11.4
12.1
13.0
64