Component

${\text{NH}}_4^{+}$ -selective electrode

${\text{NO}}_3^{-}$ -selective electrode

Ionophore

Nonactin

[1.0 wt%]

Tridodecylmethylammonium nitrate (TDMA-NO₃)

[7.1 wt%]

Plasticizer

Bis(1-butylpentyl) adipate

[66.8 wt%]

Polymer

Poly(vinyl) chloride

[32.2 wt%]

Poly(vinyl) chloride

[28.6 wt%]