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

Range:

1·10-5…1 mol/l, 0,4 …39.100 mg/l

Slope:

57 ± 2 mV/p K+

Response Time:

< 30 s (in 39 mg/l K+- Solution)

Stability:

± 0,5 mV (30 min), ± 1 mV (24 h)

Interfering ions:

Na+/K+= 1.000
Ag+/K+= 100
NH4+/K+= 5
Ion/K+- Relation between interfering
and measure ions at 10 % error

pH:

> 2

Temperature:

0…40 °C

Resistance:

~ 1 MΩ

Sensor:

organic ion exchanger in a special solvent,
homogeneously distributed in PVC

Shaft material:

Plastics (black)

Dimension:

Length: 145 mm
Diameter: 12 mm
Immersion depth: 120 mm

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