Measurement ranges depending on the path length*

Table: Note: 1 mg/L NO3-N corresponds to 4.43 mg/L NO3.

Parameters

Unit

Path length

0.3 mm

1 mm

2 mm

5 mm

10 mm

20 mm

50 mm

NO3-N

mg/L

0...165

0...50

0...25

0...10

0...5

0...2.5

0...1

NO3

mg/L

0...730

0...222

0...111

0...44

0...22

0...11

0...4.43

SAC254

1/m

0...2000

0...600

0...300

0...120

0...60

0...30

0...12

CODeq**

mg/L

0...2920

0...876

0...438

0...175

0...88

0...44

0...18

BODeq**

mg/L

0...960

0...288

0...144

0...58

0...29

0...14

0...6

TOCeq**

mg/L

0...1168

0...350

0...175

0...70

0...35

0...18

0...7

DOCeq**

mg/L

0...1168

0...350

0...175

0...70

0...35

0...18

0...7

Turb

FAU***

0...4000

0...4000

0...1477

0...444

0...197

0...93

0...36

TSSeq****

mg/L

0...6000

0...1800

0...900

0...360

0...180

0...90

0...36

UVT254

%

0...96.6

0...96.6

0...96.6

0...96.6

0...96.6

0...96.6

0...96.,6

UVT254n

%

31.,6

70.8

84.1

93.3

96.6

98.3

99.3

* under laboratory conditions
** based on KHP (Note: 100 mg COD standard solution corresponds to 85 mg/l KHP)
*** Formazin attenuation unit
**** based on SiO2

Measurement accuracy and repeatability

Path length

Parameters

Accuracy**

Precision* [mg/L]

0.3 mm

Nitrate NO3-N

± (5 % + 3.3)

0.50

Nitrate NO3

± (5 % + 14.5)

2.22

1 mm

Nitrate NO3-N

± (5 % + 1)

0.15

Nitrate NO3

± (5 % + 4.4)

0.66

2 mm

Nitrate NO3-N

± (5 % + 0.5)

0.075

Nitrate NO3

± (5 % + 2.2)

0.33

5 mm

Nitrate NO3-N

± (5 % + 0.2)

0.03

Nitrate NO3

± (5 % + 0.88)

0.133

10 mm

Nitrate NO3-N

± (5 % + 0.1)

0.015

Nitrate NO3

± (5 % + 0.44)

0.067

20 mm

Nitrate NO3-N

± (5 % + 0.05)

0.008

Nitrate NO3

± (5 % + 0.22)

0.033

50 mm

Nitrate NO3-N

± (5 % + 0.02)

0.003

Nitrate NO3

± (5 % + 0.09)

0.014

* under laboratory conditions
** referred to a nitrate standard solution

Detection limit

Parameter

Unit

Path length

0.3 mm

1 mm

2 mm

5 mm

10 mm

20 mm

50 mm

NO3-N

mg/L

1.65

0.5

0.25

0.1

0.5

0.025

0.01

NO3

mg/L

7.26

2.2

1.1

0.44

0.22

0.11

0.044

SAC254

1/m

50

15

7.5

3

1.5

0.75

0.3

CODeq

mg/L

73

22

11

4.4

2.2

1.1

0.44

BODeq

mg/L

24

7.2

3.6

1.44

0.72

0.36

0.14

TOCeq

mg/L

29.2

8.76

4.38

1.75

0.88

0.44

0.18

DOCeq

mg/L

29.2

8.76

4.38

1.75

0.88

0.44

0.18

Turb

FAU

197.37

54

26.48

10.46

5.21

2.60

1.04

TSSeq

mg/L

180

54

27

10.8

5.4

2.7

1.08

UVT254

%

25.1

25.1

25.1

25.1

25.1

25.1

25.1

UVT254n

%

0

0.0001

0.1

6.3

25.1

50.1

75.9

Limit of quantification

Parameter

Unit

Path length

0.3 mm

1 mm

2 mm

5 mm

10 mm

20 mm

50 mm

NO3-N

mg/L

5

1.5

0.75

0.3

0.15

0.075

0.03

NO3

mg/L

22.2

6.65

3.32

1.33

0.67

0.33

0.133

SAC254

1/m

166.67

50

25

10

5

2.5

1

CODeq**

mg/L

243.33

73

36.5

14.6

7.3

3.65

1.46

BODeq**

mg/L

80

7.2

3.6

1.44

0.72

0.36

0.14

TOCeq**

mg/L

97.33

29.2

14.6

5.84

2.92

1.46

0.584

DOCeq**

mg/L

97.33

29.2

14.6

5.84

2.92

1.46

0.584

Turb

FAU***

848.46

197.37

92.56

35.55

17.535

8.7

3.47

TSSeq****

mg/L

600

180

90

36

18

9

3.6

UVT254

%

UVT254n

%

* under laboratory conditions
** based on KHP (Note: 100 mg COD standard solution corresponds to 85 mg/l KHP)
*** Formazin attenuation unit
**** based on SiO2