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Printer Friendly Version IotrodeTM Solid State Membrane Ion Selective Electrode Selection Guide Ion Measured Model Number Interfering Ions*** See General Specs for Details IotrodeTM Reference Electrode Lowest + Limit of Detection Linear Measurement Range pH Range Fluoride (F-) AB 100 OH- (10) RC 601 5X10-8 Molar .001 ppm Saturated - 10-6 Molar Saturated - 0.019 ppm 0 - 13 Chloride (Cl-) AB 110 OH- (80), Br- (3X10-3), I- (5X10-7), S2- (Trace) RC 401 RC 501 3X10-6 Molar .105 ppm 1 - 10-5 Molar 35,000 - 0.350 ppm 2 - 11 Sulfide (S-) AB 120 Hg2+ (Trace) RC 501 10-17 Molar 3.2X10-13 ppm 1 - 10-7 Molar 32,000 - 0.003 ppm 11 - 13 Bromide (Br-) AB 130 OH- (3X104), Cl- (400), I- (2X10-4), S2- (Trace) RC 401 RC 501 5X10-7 Molar .040 ppm 1 - 10-6 Molar 80,000 - 0.080 ppm 1 - 12 Iodide (I-) AB 140 OH- (108), Cl- (106), Br- (5X103), S2- (Trace) RC 401 RC 501 10-8 Molar .001 ppm 1 - 5X10-8 Molar 127,000 - 0.006 ppm 1 - 13 Thiocyanate (SCN-) AB 150 OH- (3X104), Cl- (400), I- (2X10-4), S2- (Trace) RC 501 5X10-7 Molar .029 ppm 1 - 5X10-6 Molar 58,000 - 0.290 ppm 2 - 10 Cyanide (CN-) AB 160 OH- (108), Cl- (106), Br- (5X103), S2- (Trace) RC 501 10-7 Molar .002 ppm 10-2 - 5X10-7 Molar 260 - 0.013 ppm 11 - 13 Silver (Ag+) AB 170 Hg2+ (Trace) RC 601 10-17 Molar 1.1X10-12 ppm 1 - 10-7 Molar 107,900 - 0.011 ppm 1 - 13 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)

Advanced Sensor Technologies, Inc.
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Manufacturing Long-Lasting Industrial pH Sensors, ORP sensors, Ion Selective Sensors & Conductivity Sensors for Difficult Inline Process Control Measurement and Monitoring Applications
Supplying Research Grade pH Electrodes, ORP Electrodes, Ion Selective Electrodes and Conductivity Electrodes for Laboratory Testing
Offering industry leading product developments and research services for OEM manufacturers and resellers requiring pH, ORP and Ion Selective Measurements for Medical In-Vitro and In-Vivo Applications and Industrial Inline, Immersion and Submersible Measurements