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IotrodeTM Organic Membrane
Ion Selective Electrode Selection Guide
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| Ion Measured |
Model
Number |
Interfering
Ions***
See General Specs
for Details |
IotrodeTM
Reference
Electrode |
Lowest
+
Limit of
Detection |
Linear
Measurement
Range |
pH
Range |
Potassium
(K+) |
AB 400 |
Na+ (4X103),
Li+ (4X103),
NH4+ (60), Mg+2 (5X105),
Ca+2 (1.5X104) |
RC 401
RC 501 |
5X10-7 Molar
.0200 ppm |
1 - 5X10-6 Molar
39,000 - 0.195 |
2 - 12 |
Ammonium
(NH4+) |
AB 410 |
Na+ (5X103),
K+ (5),
H+ (1X105) |
RC 401
RC 501 |
2X10-7 Molar
.004 ppm |
0.1 - 5X10-6 Molar
1,800 - 0.090 ppm |
2 - 10 |
Amines (Salt)
(R-NH3+ Cl-) |
AB 420 |
Inquire to Factory |
RC 401
RC 501 |
10-5 Molar
as n-hexyl-
ammonium-
chloride |
0.1 - 5X10-5 Molar
as n-hexyl-
ammonium-
chloride |
6 - 8 |
Sodium
(Na+) |
AB 430 |
Li+ (16),
K+ (32),
Mg+2 (2500),
Ca+2 (800) |
RC 401
RC 501 |
10-6 Molar
.023 ppm |
1 - 10-5 Molar
23,000 - 0.230 ppm |
2.5 - 11 |
Calcium
(Ca+2) |
AB 440 |
Na+ (102),
K+ (167),
Mg+2 (5X103) |
RC 401
RC 501 |
5X10-7 Molar
.020 ppm |
1 - 5X10-6 Molar
40,000 - 0.200 ppm |
2.5 - 11 |
| Magnesium (Mg+2) |
AB 450 |
Na+ (3X104),
K+ (2X103),
Ca+2 (20) |
RC 401
RC 501 |
5X10-7 Molar
.012 ppm |
1 - 5X10-6 Molar
24,300 - 0.121 ppm |
2.5 - 11 |
Nitrate
(NO3-) |
AB 470 |
ClO4- (10-3),
ClO3- (0.2),
Br- (6.7), Cl- (102),
HCO3- (10-1), H2PO4- (103),
F- (103) |
RC 401
RC 501 |
5X10-6 Molar
.310 ppm |
1 - 10-5 Molar
62,000 - 0.620 ppm |
2 - 12 |
Perchlorate
(ClO4-) |
AB 480 |
NO3-
(0.5), ClO3- (0.2),
Br- (0.4), Cl- (20),
HCO3- (20), H2PO4- (20),
F- (20) |
RC 401
RC 501 |
5X10-6 Molar
.500 ppm |
1 - 10-5 Molar
100,000 - 1.0 ppm |
2 - 12 |
Lithium
(Li+) |
AB 490 |
Na+ (250), K+
(200),
Mg+2 (2X104), NH4+ (1X103) |
RC 401
RC 501 |
1X10-6 Molar
0.007 ppm |
0.1 - 6X10-6 Molar
700 - 0.042 ppm |
2 - 12 |
Barium
(Ba+2) |
AB 500 |
H+ (30), Li+
(1.5X103),
Na+ (300), Cs+ (550),
K+ (300), NH4+ (1250)
Mg+2 (5X107), Ca+2 (50) |
RC 401
RC 501 |
3X10-5 Molar
4.11 ppm |
0.1 - 3X10-4 Molar
13,700 - 41.1 ppm |
4 - 7 |
Cadmium
(Cd+2) |
AB 510 |
K+, Na+,
Cu2+, Ni2+, Pb2+, Ca2+
Co2+, Mg+2, Zn+2, Al3+, NH4+
Mn+2, Fe+2, Cs+, Li+, Ba+2
(approximately 103 for all ions listed) |
RC 401
RC 501 |
10-5 Molar
1.12 ppm |
10-2 - 5X10-5 Molar
1,120 - 5.6 ppm |
3 - 6 |
Lead
(Pb+2) |
AB 530 |
Hg2+ (0.25), Ag+
(0.32),
Cu2+ (2X103), Na+ (3.1X103)
Li+ (3.1X103), Cd2+ (5X103)
NH4+ (104) |
RC 401
RC 501 |
3X10-7 Molar
0.062 ppm |
1.6X10-2 - 10-6 Molar
3,315 - 0.207 ppm |
3 - 6 |
Silver
(Ag+) |
AB 540 |
Hg2+ (200), K+
(6.3X104),
Na+, Cu2+, Ni2+, Pb2+, Ca2+ (8X104)
Sr2+ (105), Co2+ (4X105)
Mg+2 (2X105), Zn+2 (4X105)
Cd2+ (2.5X105) |
RC 601 |
3X10-7 Molar
0.033 ppm |
0.1 - 10-6 Molar
10,790 - 0.108 ppm |
2.5 - 8.5
in AgNO3 |
Cesium
(Cs+) |
AB 560 |
H+ (500), Li+
(2.5X104),
Na+ (5000), Rb+ (30),
K+ (300), NH4+ (600)
Mg+2 (105), Ca+2 (105) |
RC 401
RC 501 |
10-5 Molar
1.33 ppm |
0.1 - 3X10-5 Molar
13,290 - 3.99 ppm |
2 - 12 |
Carbonate
(CO-3) |
AB 600 |
SCN- (0.4), Cl-
(105),
Br- (6.6X103), Salicylate (.0005),
HPO4- (8X104), NO3- (40)
SO4- (1.25X105) |
RC 401
RC 501 |
Application
Dependent
Inquire to Factory
|
Application
Dependent
Inquire to Factory
|
Application
Dependent |
Chloride
(Cl-) |
AB 610 |
Br- (1), SCN-
(1.5),
Salicylate (2.5), HCO3- (3.1X105),
HPO4- (8X105), SO4- (2X106),
F- (4X105), Acetate (1.25X105),
NO3- (1.5X103), ClO3- (65) |
RC 401
RC 501 |
10-5 Molar
.355 ppm |
10-1 - 5X10-5 Molar
3,545 - 1.772 ppm |
2 - 12 |
Nitrite
(NO2-) |
AB 620 |
SCN- (1.5X103),
Benzoate (1X104),
Acetate (1X104), Salicylate (250),
HCO3- (1X104), Cl- (1X104),
NO3- (1X104) |
RC 401
RC 501 |
5X10-6 Molar
.230 ppm |
10-1 - 10-5 Molar
4,600 - .460 ppm |
2 - 10 |
Hydronium
(H3O+ - pH) |
AB 650 |
Na+ (1010),
K+ (1010),
Ca+2 (1010)
Excellent Selectivity in biological media |
RC 401
RC 501 |
N/A |
N/A |
6 - 8 |
Tetrafluoro
Borate
(BF4+) |
AB 660 |
ClO4-
(0.5), SCN- (2.2),
I- (2.3), ClO3- (7.6),
NO3- (40), Br- (120),
CN- (125), NO2- (130),
Cl- (650), CO3- (11,500),
HPO4- (21,000), SO4- (22,000) |
RC 401
RC 501 |
2.2X10-6 Molar
.191 ppm |
10-1 - 10-5 Molar
8,680 - .868 ppm |
3 - 11.5 |
Guide
Notations for 12mm Ion Selective Electrodes:
***Interfering Ions are expressed
in ratios of permissible excess. The value defines the point at which the response
to the interfering ion is more than one standard deviation of the measured ion.
+
This
ratio is defined by the following quotient:
(Concentration of Interfering Ion in Molarity / Concentration of Measured Ion in Molarity)
The lowest limit of detection and linear measurement range are
expressed in units of Molarity followed by the equivalents in units of parts per million
(ppm)
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