Plastic Membrane Electrodes - Series 35

Electrodes with Plastic Membranes - Series 35

The electrodes have sensitive membranes formed by a polymer matrix in which the active substance is fixed. The connection of the sensing membrane with the coaxial cable is made through contact with a liquid. The body of the electrode is made of plastic. The modern design of the ion selective electrodes with PVC membrane allows the entire electrode system installed in the exchangeable module to be replaced very quickly. In terms of chemical resistivity, the electrode housing is highly resistant to commonly used organic solvents, mineral acids and bases. Replacement modules for this series are available separately.

Electrode data sheet




Electrode
Type number
Range

temp[°C]
Max. selected resistance

[Mohm]
Final range

[mol/L]
Range

pH for direct potentiometer.
Electrolyte ISA/pH
Interference

Ki,jpot


fluoroborate
05-35
0-40
1
10-1-10-6
4-10
NaH2 PO4

NH4F
F-=8.10-5, Cl-=2.10-4, Br-=2.10-3,

I-=2.10-1, CH3COO-=9.10-1, ClO4-=9,

SCN-=4, NO3-=2.10-2, HCO3-=2.10-4,

SO42-<10-5, H2PO 4-<10-5,

NO2-=9.10-4


nitrate
07-35
0-40
1
10-1-10-6
4-10
NaH2 PO4 Na2CO4
Cl-=5.10-3, Br-=8.10-1, I-=10, ClO3-=2, HCO3-=4.10-4, CH3COO-=6.10-4,

NO2-=4.10-2


ammonium
11-35
0-40
10
10-1-10-5
4-10
MgCl2
K+=1.3.10-1, Rb+=4.8.10-2, Cs+=4.2.10-3, Na+=3.2.10-3, H+=3.7.10-4


potassium
19-35
0-40
1
10-1-10-6
4-10
NaCl
Na+=2.10-4, NH4+=2.10-2, Rb+=2.1,

Cs+=10-1, Li+=8.10-5, H+=4.10-4


calcium
20-35
0-40
1
10-1-10-6
5-9
KCl
Ba2+= ~10-5, Mg2+=5.10-5, Sr 2+=1.4⋅10-3, K+= ~10-6, Na+=5.10-5, Li+=5.10-3


barium
56-35
0-40
1
10-1-10-6
4-10
LiCl
Li+=4.7.10-4, Na+=10-3, K+=2.10-3, Rb+=7.10-4, Cs+=8.10-4, NH4+=2.10-4, Ca2+=8.10-4, Sr2+=2.10-1, Mg2+=10-6


perchlorate
81-35
0-40
1
10-1-10-6
4-10
NaH2 PO4 Na2CO4
Cl-=3.10-4, Br-=6.10-4, NO3-=2.10-3,

I-=2.10-2, F-=3.10-4




Modules with added M designation

The 35 Series plastic diaphragm electrodes are supplied in a design with a replaceable module. These modules are also available separately so that the customer can replace only the module in the event that the function of the electrode deteriorates. The modules are supplied individually, to all electrodes with plastic diaphragms.