Products > Sensors Art. no. 461 7410

Ion-selective electrode for ammonium

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Art. no. 461 7410 - Ion-selective electrode for ammonium

The ammonium selective electrode is a matrix membrane electrode with a fluid contact. The flexible
ammonium selective membrane is made from a special ion exchanger
who is dissolved in an organic solvent and embedded
into a PVC matrix.

Technical data:
Parameter: NH4+
Measuring principle: Ion-selective Electrode
Measuring range: 1*10-5…1 mol/l, 0,2…18.000 mg/l
Slope: 57 ± 2 mV/p NH4+
Response time: < 30 s (in 180 mg/l NH4+-solution)
Stability: ± 0,3 mV (30 min), ± 1 mV (24h)
Working temperature: 0 … 40 °C
Max. allowed working pressure: 1 bar
pH-range: pH 3 … pH 7
Resistance: ~ 1 MΩ

Interferences:
Ca2+/NH4+ = 10.000, Mg2+/NH4+ = 10.000, Na+/NH4+ = 1.000, H+/NH4+ = 100, K+/NH4+ = 10,
Ion/NH4+-Relation between interfering and measure ions at 10% error

Housing:
Material: plastic (black)
Dimensions: length: 145 mm, diameter: 12 mm
Immersion depth: 120 mm
Screw plug connector with PG13.5

Required cable: Art.no. 439 0501