Ion Selective Electrodes

Our high quality ion selective electrode feature:

High Sensitivity: Most ions can be measured to below 1 micro. Some ions such as copper (+2) can be measured down to the low part per billion range.

Fast response time: Due to membrane design parameters ion selective have a rapid response to changing ionic concentration. Response time of 30 seconds is typical.

Broad concentration range: Electrodes will detect ions down to the low part per million range up to several thousand ppm. Some of the electrodes will measure up to a concentration of 1 Molar.

Resistant Body: Makes electrodes usable in acids, bases and some solvents.

Portable: On-the-spot field measurements can be made without a trip back to the laboratory.

Small Samples: Measures samples as small as 5 ml. Some of the combination ion electrodes will read down to just 2 ml of liquid.

Quick and Simple Readings: The electrodes can be used with any portable or laboratory pH/millivolt meter.

Direct Plug: Our electrodes plug directly into your pH/millivolt meter. No compatibility problems.

Best buy! Complete ion measurement systems measure, log & graph all in one!

You can now purchase ion electrodes as a complete measurement system which measures, logs and graphs all-in-one. System includes meter, ion electrode, our exclusive PC plotting software and more.

See features and advantages of complete ion systems.

Specifications for both electrodes and complete systems are below.

All ion selective electrodes in the table below are combination electrodes where the reference electrode is already included within the body of the ion selective electrode. Mono electrodes without the reference electrode are also available upon request. Please contact us for pricing and delivery.
Scroll further for ion specifications ------------------------------------------->

** Add -XS to catalog numbers for system catalog numbers

Electrode type	Cat. No.	Measurement Range (M)	Concentration Range(PPM)	pH Range	Temp. Range (oC)	Interferences
Ammonia	LGS-136NH	5exp-7 to 1.0	0.01 to 17,000	above 11	0 to 50	volatile aminues
Bromide	LIS-146BRC	5exp-6 to 1.0	0.4 to 79,000	2 to 14	0 to 80	S-, I-, CN-, high levels of CL- and NH3
Cadmium	LIS-146CDC	1exp-7 to 1exp-1	0.01 to 11,200	2 to 12	0 to 80	Ag+, Hg+2, Cu+2
Calcium	LIS-146CAC	5exp-6 to 1.0	0.2 to 40,000	3 to 10	0 to 50	Pb+2, Hg+2, Cu+2, Ni+2
Carbon Dioxide	LGS-136CO	exp-2 to exp-4	4.4 to 440	4.8 to 5.2	0 to 50	Volatile weak acids
Chloride	LIS-146CLC	5exp-6 to 1.0	1.8 to 35,500	2 to 12	0 to 80	S-2, I-, CM-, Br-
Copper	LIS-146CUC	1exp-8 to 1exp-1	0.0006 to 6,350	2 to 12	0 to 80	Ag+, Hg+2
Cyanide	LIS-146CNC	5exp-6 to 1exp-2	0.13 to 260	11 to 13	0 to 80	S-2, I-, Br-, Cl-
Fluoride	LIS-146FC	1exp-6 to saturated	0.02 to saturated	5 to 8	0 to 80	OH-
Fluorborate	LIS-146FLC	6exp-6 to 1.0	0.1 to 10,800	2.5 to 11	0 to 50	ClO4-, I-, CN-
Iodide	LIS-146IC	5exp-8 to 1.0	0.006 to 127,000	0 to 14	0 to 80	S-2, CN-, Br-, Cl-
Lead	LIS-146LIC	1exp-6 to 1exp-1	0.2 to 20,700	3 to 8	0 to 80	Ag+, Hg+2, Cu+2, high levels Cd+2 and Fe+2
Nitrate	LIS-146NOC	7exp-6 to 1.0	0.6 to 62,000	2.5 to 11	0 to 50	ClO4-, I-, CN-, BF4-
Perchlorate	LIS-146PERC	7exp-6 to 1.0	0.7 to 98,000	2.5 to 11	0 to 50	no significant interferences
Potassium	LIS-146KC	1exp-6 to 1.0	0.04 to 39,000	2 to 12	0 to 50	Cs+, NH4+
Silver/sulfide	LIS-146AGSC	1exp-7 to 1.0	AG = 0.01 to 107,900 S = 0.003 to 32,100	2 to 12	0 to 80	Hg+2, Hg+
Sodium	LIS-146NAC	1exp-6 to saturated	0.2 to 23,000	5 to 12	0 to 80	H+, K+, Li+, Ag+, Cs+, Tl+
Surfactant	LIS-146SURC	1exp-5 to 5exp-2	1.0 to 12,000	2 to 12	0 to 50	similar types of surfactants
Thiocyanate	LIS-146SCNC	5exp-6 to 1.0	0.3 to 58,000	2 to 10	0 to 80	S+2, CN-, I-, Br-, S2O3-2, NH3
Water hardness	LIS-146WHC	1exp-5 to 1.0	0.4 to 40,000 (as Ca)	5 to 10	0 to 50	Cu+2, Zn+2, Mi+2, Fe+2

For specific questions or to receive printed literature, send your request by email to slby800@163.com or call us at 400-650-8506.