Solid state electrodes - series 37

solid-state electrodes

The electrodes have sensitive membrane formed by a solid inorganic substance of monocrystalline or pressed polycrystalline material. The membrane is mounted in a specially adapted epoxy body of the electrode. The conductive connection of the sensitive element to the coaxial cable, which is used for the connection to the measuring instrument, is effected either by a liquid or a solid contact. The electrode body of the series 37 is made of a special epoxide resin with excellent mechanical properties, high temperature stability and a sufficient chemical resistivity.

Table of solid state electrodes parameters

Electrode Type number Tempe rature range
[°C]
Max. elect. resist.
[MOhm]
Conc. range
[mol/l]
pH range 
for direct potenciom.
ISA/pH electrolyte Interference
Ki,jpot
fluoride 09-37 0-80 1 10-1-10-6 4-7 TISAB OH-=0,1
chloride 17-37 0-80 10 10-1-10-5 2-12 NaNO3 Br-=7,6.102, J-=1,3.104
S2O32-=10, CN-=105
NH4+=6,1.10-2, OH-=8.10-2
S2- must not be present
bromide 35-37 0-80 5 10-1-10-6 2-12 NaNO3 J-=6.103, CN-=104, NH4+=0,5,
 S2- must not be present
iodide 53-37 0-80 1 10-1-10-6 3-12 NaNO3 Cl-=10-5, Br-=10-3, CN-=1,
S2- must not be present
thiocyanate 58-37 0-80 1 10-1-10-6 2-12 NaNO3 Br-=1,1, S2O32-=1,7, Cl-=3,6.10-3, NH4+=3,4.10-3
cyanide 06-37 0-80 1 10-1-10-6 12-13 NaOH J-=2,2, Br-=1,6.10-4, Cl-=1,1.10-5,
S2O32-=1,1.10-5
sulphide 16-37 0-80 1 10-1-10-6 13-14 NaOH Cl-, Br-, S2O32-, S2O32-<10-5
Hg2+, Ag+ must not be present
silver 47-37 0-80; 1 10-1-10-6 2-5 NaNO3 Hg2+, S2- must not be present
copper 29-37 0-80 1 10-1-10-6 2-5 NaNO3 Pb2+, Fe2+=10, Ni2+<10-4
,Ag+, Hg2+ must not be present
lead 82-37 0-80 1 10-1-10-6 2-5 NaNO3 Cd2+=3,4.10-1, Zn2+=7,4.10-5, Ni2+=4,7.10-4, Mn2+=6,8.10-5, Co2+=1,6.10-4, Mg2+=4,6.10-5
Ag+, Cu2+, Hg2+, S2-
Fe3+ must not be present
cadmium 48-37 0-80 1 10-1-10-6 2-5 NaClO4 Pb2+=7,3.10-1, Co2+=
1,6.10-4, Zn2+=4,4.10-5, Mn2+=1,9.10-5, Ni2+=4,9.10-5, Ca2+=3,9.10-6,
Mg2+=3,1.10-6, Ag+, Cu2+, Hg2+
S2- must not be present
 
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