Page 1
Ion Selective Electrode Selection Guide
To Order
Direct Measurement Range
Electrode Model No. Housing Sensor Type Molar PPM
Ammonia (NH3) ISE-8710 Epoxy Gas-sensing Combination 1.0 to 5x10-7 17000 to 0.01
Ammonium (NH4+) ISE-8711 PVC Polymer membrane mono 1.0 to 5x10-6 18000 to 0.1
ISE-8712 Glass Combination
Bromide (Br-) ISE-8720 Epoxy Solid-state mono 1.0 to 5x10-6 79900 to 0.4
ISE-8722 Glass Combination
Cadmium (Cd+2) ISE-8730 Epoxy Solid-state mono 1x10-1 to 1x10-7 11200 to 0.01
ISE-8732 Glass Combination
Calcium (Ca+2) ISE-8740 PVC Polymer membrane mono 1.0 to 5x10-6 40000 to 0.2
ISE-8742 Glass Combination
Carbon Dioxide (CO2) ISE-8750 Epoxy Gas-sensing Combination 1x10-2 to 1x10-4 440 to 4.4
Carbonate (CO3-2)
Chloride (CI-) ISE-8760 Epoxy Solid-state mono 1.0-5 x 10-5 35500 to 1.8
ISE-8770 Glass Combination
Copper (Cu+2) ISE-8800 Epoxy Solid-state mono 1 x 10-1 to 1 x 10-8 6350 to 6.4 x 10-4
ISE-8802 Glass Combination
Cyanide (CN-) ISE-8780 Epoxy Solid-state mono 1 x 10-2 to 5 x 10-6 260 to 0.13
ISE-8782 Glass Combination
Fluoride (F-) ISE-8790 Epoxy Solid-state mono Saturated to 1 x 10-6 Saturated to 0.02
ISE-8795 Glass Combination
Fluoroborate (BF4-) ISE-8810 PVC Polymer membrane mono 1.0 to 7 x 10-6 10800-0.1
ISE-8812 Glass Combination (as B)
Iodide (I-) ISE-8715 Epoxy Solid-state mono 1.0 to 5 x 10-8
ISE-8716 Glass Combination
Lead (Pb+2) ISE-8725 Epoxy Solid-state mono 1 x 10-1 to 1 x 10-6 20700 to 0.2
ISE-8726 Glass Combination
Nitrate (No3-) ISE-8735 PVC Polymer membrane mono 1.0 to 7 x 10-6 62000 to 0.5
ISE-8736 Glass Combination
Nitrogen Oxide (NOx) ISE-8830 Epoxy Gas Sensing Combination 5 x 10-3 to 5 x 10-6 220 to 0.2
Perchlorate (CIO4-) ISE-8840 PVC Polymer membrane mono 1.0 to 7 x 10-6 98000 to 0.7
ISE-8842 Glass Combination
Potassium (K+) ISE-8745 PVC Polymer membrane mono 1.0 to 1 x 10-6 39000 to 0.04
ISE-8746 Glass Combination
Silver/Sulfide (Ag+/S-2) ISE-8755 Epoxy Solid-state-mono Ag
ISE-8756 Glass Combination S
+
= 1.0 to 1 x 10
-2
= 1.0 to 1 x 10
Sodium (Na+) ISE-8765 Glass Combination Saturated to 1 x 10-6 Saturated to 0.02
Surfactant (X+,X-) ISE-8880 PVC Polymer membrane mono 5 x 10-2 to 1 x 10-5 12000 to 1.0
ISE-8882 Glass Combination
Water Hardness ISE-8900 PVC Polymer membrane mono 1.0 to 1 x 10-5 40000 to 0.4
(Ca+2/Mg+2) ISE-8902 Glass Combination (as Ca)
Double Junction Reference Electrode, PHE-3211.
*
Single Junction Reference Electrode, PHE-3111.
127000
+
-7
Ag
= 107900 to 0.01
-7
-2
S
= 32100 to 0.003
to 6 x 10-3
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Page 2
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Ion Selective Electrode Selection Guide
Slope mV pH Temp. Resp Time Reference Reference
per Decade Range Range °C Secs Interferences Electrode* Electrolyte
56 ±3 above 11 0 to 50 30 Volatile amines N/A NH4CL
56 ±2 4 to 10 0 to 50 30 K+ Double Junction NaCI
57 ±2 2 to 14 0 to 80 20 S-2,I-,CN-, high levels Double Junction KNO3
of CI and NH3 KNO3
27 ±2 2 to 12 0 to 80 20 Ag+, Hg+2, Cu+2, Double Junction KNO3
high levels of Pb+2 & Fe
27 ±2 3 to 10 0 to 50 30 Pb+2, Hg+2, Cu+2, Ni+2 Single Junction KCI
56 ±3 4.8 to 5.2 0 to 50 30 Volatile weak acids N/A NaHCO3
56 ±2 2 to 12 0 to 80 20 S-2, I-, CN-, Br - Double Junction KNO3
27 ±2 2 to 12 0 to 80 20 Ag+, Hg+2, high levels of CI-, Double Junction KNO3
Br -, Fe+2, Cd
57 ±2 11 to 13 0 to 80 20 S-2, I-, Br -, CI- Double Junction KNO3
+2
+2
57±2 5 to 8 0 to 80 20 OH- Single Junction KCI
56 ±2 2.5 to 11 0 to 50 30 CIO4-, I-, CN- Double Junction (NH4)2SO4
57 ±2 0 to 14 0 to 80 20 S-2, CN-, Br -, CI- Double Junction KNO3
S2O3-2, NH3
25 ±2 3 to 8 0 to 80 20 Ag+2, Hg+2, Cu+2 Double Junction KNO3
high levels of Cd+2 and Fe
56 ±2 5 to 10 0 to 50 30 Na+, K+, Ca+2 Double Junction (NH4)2SO4
57 ±2 2.5 to 11 0 to 50 30 CIO4-, I-, CN-, BF4- Double Junction (NH4)2SO4
56 ±3 1.1 to 1.7 0 to 50 30 SO2, HF, acetic acid N/A NaNO2
56 ±2 2.5 to 11 0 to 50 30 no significant interference Double Junction (NH4)2SO4
56 ±2 2 to 12 0 to 50 30 Cs+, NH4+, Double Junction NaCI
Ag+=57±2 2 to 12 0 to 80 20 Hg2+, Hg+ Double Junction KNO3
S-2=27±2
56 ±2 5 to 12 0 to 80 20 H+, K+, Li+, Ag+, Cs+, TI+ Double Junction NH4CI
for titration 2 to 12 0 to 50 30 similar types of surfactants Single Junction KCI
26 ±3 5 to 10 0 to 50 30 Cu+2, Zn+2, Ni+2, Fe+2 Single Junction KCI
(as Ca)
Comes complete with operator’s manual.
Ordering Examples: ISE-8711, ammonium electrode. ISE-8756, silver/sulfide electrode.
+2
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Page 3
ISE Standards, ISA & Reference
Outer-Fill Solutions
PHI-359 bench
top pH meter,
shown smaller
than actual size.
To Order
Standard (475 mL) ISA (475 mL) Reference Outer-Fill (125 mL)
0.1 m 1000 PPM 100 PPM Single Double
Electrode Model No. Model No. Model No. Model No. Junction Junction
Ammonia ISE-8710-S1 ISE-8710-S2 ISE-8710-R2 PHFS-8710 – –
Ammonium ISE-8711-S1 ISE-8711-S2 ISE-8711-S3 ISE-8711-R1 PHFS-1042 PHFS-1043
Bromide ISE-8720-S1 ISE-8720-S2 – ISE-8720-R1 – PHFS-NO3
Cadmium – – – ISE-8730-R1 – PHFS-NO3
Calcium ISE-8740-S1 ISE-8740-S2 ISE-8740-S3 ISE-8740-R1 – PHFS-4MKCL
Carbon ISE-8750-S1 ISE-8750-S2 ISE-8750-S3 ISE-8750-R1 PHFS-8750 –
Dioxide
Chloride ISE-8770-S1 ISE-8770-S2 ISE-8770-S3 ISE-8770-R1 PHFS-1046 PHFS-NO3
(Solid State, PHFS-1045 PHFS-1044
PVC)
Copper ISE-8800-S1 ISE-8800-S2 – ISE-8800-R1 PHFS-1046 PHFS-NO3
Cyanide – – – – PHFS-1046 PHFS-NO3
Fluoride ISE-8790-S1 ISE-8790-S2 – ISE-8790-R2 PHFS-KCL PHFS-4MKCL
ISE-8790-R1
Fluoroborate ISE-8810-S1 ISE-8810-S2 – ISE-8810-R1 PHFS-1045 PHFS-1044
Iodide ISE-8715-S1 ISE-8715-S2 – ISE-8715-R1 PHFS-1046 PHFS-NO3
Lead ISE-8725-S1 – – ISE-8725-R1 PHFS-1046 PHFS-NO3
Lithium – – – – PHFS-1041 PHFS-1044
Nitrate ISE-8735-S1 ISE-8735-S2 ISE-8735-S3 ISE-8735-R1 PHFS-1045 PHFS-1044
Nitrogen ISE-8830-S1 ISE-8830-S2 ISE-8830-S3 ISE-8830-R1 PHFS-NOX –
Oxide
Perchlorate ISE-8840-S1 ISE-8840-S2 – ISE-8840-R1 PHFS-1045 PHFS-1044
Potassium ISE-8745-S1 ISE-8745-S2 – ISE-8745-R1 PHFS-1042 PHFS-1043
Silver/Sulfide ISE-8755-S1 ISE-8755-S2 – ISE-8755-R1 PHFS-1046 PHFS-NO3
Sodium ISE-8765-S1 ISE-8765-S2 ISE-8765-S3 ISE-8765-R1 PHFS-1041 PHFS-1047
(Glass)
Sodium ISE-8860-S1 ISE-8860-S2 ISE-8860-S3 ISE-8860-R1 PHFS-1041 PHFS-1047
(PVC)
Surfactant ISE-8880-S1 ISE-8880-S2 – ISE-8880-R1 PHFS-KCL PHFS-4MKCL
Water
ISE-8900-S1 ISE-8900-S2 ISE-8900-S3 ISE-8900-R1 PHFS-KCL PHFS-4MKCL
Hardness
C-23
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