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

Range:

2,5·10-6…1 mol/l, 0,1…40.000 mg/l

Slope:

27 ± 2 mV/p Ca2+

Response Time:

< 30 s (in 400 mg/l Ca2+- Solution)

Stability:

± 0,3 mV (30 min), ± 1 mV (24 h)

Interfering ions:

Mg2+/Ca2+= 600
Fe2+/Ca2+= 10
Cu2+/Ca2+= 10
Pb2+/Ca2+= 2
Zn2+/Ca2+= 1
Sr2+/Ca2+= 0,6
Ba2+/Ca2+= 0,5
Ion/Ca2+- Relation between interfering
and measure ions at 10 % error

pH:

3 .. 9

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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