Real sample

Ion-selective electrodes

[mg/L]

Ion chromatography

[mg/L]

Freiberg (tap water)

22

22

Enkenbach (tap water)

33

31

Köln (tap water)

17

16

Leisnig (tap water)

8

7

Hartha (tap water)

27

30

Döbeln (tap water)

25

23

Miera (well water)

87

83

Hermsdorf (well water)

79

79