Hangzhou Qiwei Instrument Co., Ltd. is one of the leading manufacturers and suppliers of ion-selective electrode in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale bulk ion-selective electrode in stock here from our factory. We also accept customized orders.
product key technologies
The Ion-Selective Electrode is a high-precision and high-stability professional sensing element. It is specially designed for the rapid and accurate determination of specific ions in aqueous solutions. Widely applicable to laboratory analysis, industrial online monitoring, field on-site detection and other scenarios, it serves as an indispensable core testing accessory for scientific research and teaching, production quality control, environmental monitoring and other fields.
Technical parameters
|
Electrode |
Fluoride |
Chloride |
Bromide |
|
Model |
F201 |
CL201 |
Br201 |
|
Description |
Crystal |
Solid state |
Solid state |
|
Measuring Range |
1~5×10-7MF- (19000~0.01ppm) |
10-2~5×10-5MCl (35500~1.8ppm) |
1~5×10-6MBr- (79000~0.4ppm) |
|
Optimum PH Range |
5~6 |
2~12 |
2~11 |
|
Responds Time |
<5min |
<2min |
<2min |
|
Membrane Resistance |
<10MΩ |
<0.5MΩ |
<0.5MΩ |
|
Temperature Range |
5~60℃ |
0~60℃ |
0~60℃ |
|
Potentiometric Selective Coefficients |
OH- |
I-(2×102); NO3-(10-4); SO42-(10-4); Br-(4×102); CN-(2×102); Grave interference by sulphurion |
I-(2.6); Cl-(1×10-5); NO3-(3.8×10-4); SO42-(10-4); Grave interference by sulphurion |
|
Standard Solution |
NaF |
NaCl |
NaBr |
|
Electrode |
Iodide |
Cyanide |
Mercury |
|
Model |
I201 |
H201 |
Hg201 |
|
Description |
Solid state |
Solid state |
Solid state |
|
Measuring Range |
10-2×5×10-7MI- (127000~0.06ppm) |
10-2~10-6MCN- (260~0.03ppm) |
10-1~5×10-6MHg2+ (20000~1ppm) |
|
Optimum PH Range |
2~12 |
≥7 |
3~5 |
|
Responds Time |
<2min |
<2min |
<2min |
|
Membrane Resistance |
<0.5MΩ |
<0.5MΩ |
<0.5MΩ |
|
Temperature Range |
0~60℃ |
0~60℃ |
0~60℃ |
|
Potentiometric Selective Coefficients |
Cl-(2×10-6); Br-(1×10-6); NO3-(2×10-7); SO42-(7×10-7); HPO42-(8.3×10-7) |
Main interference ions: S2-; I-; Hg2+ |
Interference by silver ions |
|
Standard Solution |
KI |
NaCN |
Hg2+ |
|
Electrode |
Silver/Sulfide |
Plumbum |
Cuprum |
|
Model |
Ag201 |
Pb201 |
Cu201 |
|
Description |
Solid state |
Solid state |
Solid state |
|
Measuring Range |
10-1~10-7M |
10-1~5×10-7MPb2+ (20700~0.1ppm) |
1~5×10-7MCu2+ (63500~0.012ppm) |
|
Optimum PH Range |
2~12 |
3~6 |
3~5 |
|
Responds Time |
<2min |
<2min |
<2min |
|
Membrane Resistance |
<0.5MΩ |
<0.6MΩ |
<0.5MΩ |
|
Temperature Range |
0~60℃ |
0~60℃ |
0~60℃ |
|
Potentiometric Selective Coefficients |
Noninterference ions: F+; NO3-; I-; Cl- |
Fe3+(2.7); Cu2+(1×103); Mg2+(4×10-6); Ba2+(2×10-5); Ca2+(6×10-6); Zn2+(2×10-5) |
Noninterference ions: K+; Ca2+; Ba2+; Zn2+; Fe2+ |
|
Standard Solution |
Silver: AgNO3 |
PbNO3 |
CuNO3 |
|
Electrode |
Cadmium |
Micro-Kalium |
Calcium |
|
Model |
Cd201 |
K401 |
Ca201 |
|
Description |
Solid state |
PVC |
PVC |
|
Measuring Range |
10-1~5×10-7MCd2+ (11200~0.05ppm) |
10-1~5×10-7MK+ (3900~0.02ppm) |
10-1~5×10-6MCa2+ (4000~0.2ppm) |
|
Optimum PH Range |
3~10 |
3.5~10.5 |
5~10 |
|
Responds Time |
<2min |
<3min |
<3min |
|
Membrane Resistance |
<0.5MΩ |
<30MΩ |
<10MΩ |
|
Temperature Range |
0~60℃ |
0~45℃ |
0~45℃ |
|
Potentiometric Selective Coefficients |
Noninterference ions: K+; Na+ Interference ions: Hg2+; Pb2+; Ag+; S2- |
Na+(3×10-3); Ca2+(1×10-5); Li+(1×10-3) |
K+((1×10-4); Na+(1×10-4); Zn2+(7×10-1); Ba2+(3×10-5); Mg2+(1×10-3); Fe3+(1) |
|
Standard Solution |
CdNO3 |
KCl |
CaCl |
|
Electrode |
Nitrate |
Fluoroborate |
Vater hardness |
|
Model |
NO3201 |
FPSG2 |
YGa201 |
|
Description |
PVC |
PVC |
PVC |
|
Measuring Range |
1×10-6MNO3- (62000~0.062ppm) |
10-1~3×10-6MBF4- (8600~0.3ppm) |
10-1~5×10-5M |
|
Optimum PH Range |
2.5~9 |
3~11 |
2~9 |
|
Responds Time |
<3min |
<3min |
<3min |
|
Membrane Resistance |
<10MΩ |
<1MΩ |
<10MΩ |
|
Temperature Range |
5~45℃ |
5~40℃ |
0~40℃ |
|
Potentiometric Selective Coefficients |
Cl-(4.9×10-2); SO42-(4×10-5); H2PO3-(1×10-4) |
SO42-(2.5×10-6); F-(3×10-6); Br-(10-3); NO3-(6.5×10-3); Cl-(6×10-5); I-(8×10-2); CNS-(0.25) |
Na+(1); K+(1×10-1) |
|
Standard Solution |
NaNO3 |
NaBF4 |
Ca2+, Mg2+ |
|
Electrode |
Ferric |
Ammonia |
Carbon dioxide |
|
Model |
Fe201 |
A201 |
CO2 |
|
Description |
FeCl4 PVC |
Gas sensor |
Gas sensor |
|
Measuring Range |
10-1~1×10-4MFe3+ (35500~1.8ppm) |
1×10-6M (18000~0.018ppm) |
10-2~5×10-5M (480~1ppm) |
|
Optimum PH Range |
<2 |
>11 |
/ |
|
Responds Time |
<2min |
<5min |
<5min |
|
Membrane Resistance |
<2MΩ |
<300MΩ |
<300MΩ |
|
Temperature Range |
0~45℃ |
0~60℃ |
0~60℃ |
|
Potentiometric Selective Coefficients |
NO3-, SO42-, Cl- |
Inteference by volatile amines |
Interference by volatile weak acid |
|
Standard Solution |
Fe3+ |
NH4Cl |
NaHCO3 |
|
Electrode |
Hydrothion |
Sulfur dioxide |
Sodium |
|
Model |
LHH2 |
RYHL2 |
Na201 |
|
Description |
Gas sensor |
Gas sensor |
Glass |
|
Measuring Range |
10-2~5×10-7M (480~1ppm) |
10-2~10-5M |
1~10-7MNa+ (23000~0.002ppm) |
|
Optimum PH Range |
/ |
/ |
/ |
|
Responds Time |
/ |
/ |
/ |
|
Membrane Resistance |
/ |
/ |
<50MΩ |
|
Temperature Range |
/ |
/ |
5~80℃ |
|
Potentiometric Selective Coefficients |
/ |
/ |
H+(20~30) K+ (1/20~1/30) |
|
Standard Solution |
/ |
/ |
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