Hach NT3100sc Manuel D'utilisation page 8

Table 1 Recommended pathlength—NT3100sc nitrate probe (continued)
Application
Effluent
Drinking Water
Raw drinking water
Finished water/distribution
Table 2 Recommended pathlength—NT3200sc nitrate and nitrite probe
Application
Wastewater
Nitrification/denitrification
Nitrification/denitrification, more than
5,000 mg TSS/L sludge
Anammox/nitritation mainstream
Effluent
Drinking Water
Finished water/distribution
Note: After the complete installation of the NT3200sc, especially in sludge, it is possible that invalid values occur,
then the manufacturer recommends a matrix calibration. The matrix calibration makes sure to get a correct
measurement of the mixed NO
light absorption caused by the unwanted and dissolved organics. Refer to
4
When nitrate and nitrite are in the sample, the accuracy of NO
concentrations decrease.
5
Nitrite accuracy is limited.
6
Nitrite accuracy is limited when NO
7
Nitrite accuracy is limited when NO
8
Only in low (approximately 0 mAbs/mm) UV absorbance matrix.
8 English
1 mm (max NO
5
✔
5
(25–30 mg/L)
✔
✔ (10–30 mg/L)
5
(30–70 mg/L)
✔
5
✔ (45–68 mg/L)
–N and NO –N concentration. The matrix calibration will decrease the effect of the
2 3
–N is more than 10 mg/L.
3
–N is more than 18 mg/L.
3
Pathlength (maximum mg/L NO
–N) 2 mm (max NO
3
(30 mg/L) ✔ (5–10 mg/L)
✔(5–10 mg/L)
6
(20 mg/L)
✔
7
✔ (15–20 mg/L)
Matrix calibration
–N and the maximum NOx–N
2
Pathlength
1 mm 2 mm 5 mm
✔ ✔
✔ ✔
✔
4
–N)
3
–N) 5 mm (max NO
3 3
✔ (5 mg/L)
8
✔ (5 mg/L)
on page 16.
–N)