LaMotte DC1600 Colorimeter User Manual
Page 84
PROCEDURE
1.
Rinse a clean colorimeter tube (0967) with sample water. Fill to the 10 mL line with sample.
2.
Select setting 5 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 tube from colorimeter. Use the 1.0 mL pipet (0354) to add 1.0 mL of *Sulfide Reagent A (V-4458). Cap and
mix.
5.
Add 6 drops of *Sulfide Reagent B (V-4459). Cap and mix. Wait 1 minute. Solution will turn blue if sulfides are
present.
6.
Use the 1.0 mL pipet (0354) to add 2.0 mL of Sulfide Reagent C (4460). Cap and mix. Color development is
immediate and stable.
7.
Press “30 Second Read” button and insert tube into colorimeter chamber. Record %T as soon as reading stabilizes.
8.
Consult calibration chart to determine sulfide concentration in parts per million (ppm) .
DC1600 SULFIDE CALIBRATION CHART
%T
9
8
7
6
5
4
3
2
1
0
90
0.00
0.02
0.03
0.05
0.06
0.08
0.09
80
0.11
0.12
0.14
0.15
0.17
0.19
0.20
0.22
0.23
0.25
70
0.27
0.29
0.30
0.32
0.34
0.36
0.37
0.39
0.41
0.43
60
0.45
0.47
0.49
0.51
0.53
0.55
0.57
0.59
0.61
0.63
50
0.65
0.67
0.70
0.72
0.74
0.76
0.79
0.81
0.84
0.86
40
0.89
0.91
0.94
0.96
0.99
1.02
1.04
1.07
1.10
1.13
30
1.16
1.19
1.22
1.25
1.29
1.32
1.35
1.39
1.43
1.46
20
1.50
1.54
1.58
1.62
1.66
1.70
1.75
1.80
1.84
1.89
10
1.95
2.00
2.06
2.12
2.18
2.24
2.31
2.38
2.46
2.54
0
2.63
2.73
2.83
2.95
84