View source for Specifications of Ion Selective Electrodes

These specifications apply to the ion selective electrodes:
* [https://www.edaq.com/ET1601 ET1601] MINI Ion Selective Electrodes
* [https://www.edaq.com/ET1632 ET1632] Modular Single Ion Selective Electrode
* [https://www.edaq.com/ET1615 ET1615] Modular Ion Selective Electrode Inserts



{| class="wikitable sortable"
! scope="col" | Ion || scope="col" | Slope (mV/dec) || scope="col" | Lineal Range || scope="col" | pH || scope="col" | Response Time || scope="col" | Working Temperature (°C) || scope="col" | Interferences (log Kij)
|-
| Ammonium || 54&plusmn;5 || 0.09 to 9000 mg/L || 4 to 8.5 || &lt; 1 min || 5 to 50 || K (-0.8); Na (-2.7)
|-
| NH4+ ||  || 5e-6 to 0.5 mol/L ||  ||  ||  || Mg (-3.2); Ca (-4)
|-
| Bromide || -54&plusmn;5 || 0.4 to 8000 mg/L || 1 to 12 || &lt; 1 min || 5 to 50 || Error in presence of Ag, S, I or CN
|-
| Br- ||  || 5e-6 to 0.1 mol/L ||  ||  ||  || Cl (-2.7); OH (-4.5)
|-
| Calcium || 24&plusmn;5 || 0.4 to 4000 mg/L || 3.5 to 8 || &lt; 1 min || 5 to 50 || NH4 (-3); K (-3.6)
|-
| Ca2+ ||  || 1e-5 to 0.1 mol/L ||  ||  ||  || Na (-3.7)
|-
| Cyanide || -54&plusmn;5 || 0.1 to 250 mg/L || 11 to 14 || &lt; 1 min || 5 to 50 || Error in presence of Ag or S
|-
| CN- ||  || 4e-6 to 0.01 mol/L ||  ||  ||  || same selectivity for I-
|-
| Chloride || -54&plusmn;5 || 1.5 to 35000 mg/L || 2 to 12 || &lt; 1 min || 5 to 50 || Error in presence of Ag or S
|-
| CI- ||  || 4e-5 to 1 mol/L ||  ||  ||  || Irreversible damage to membrane
|-
| Copper || 24&plusmn;5 || 0.06 to 3200 mg/L || 2 to 7 || &lt; 1 min || 5 to 50 || Error in presence of Ag, Cl or S
|-
| Cu2+ ||  || 1e-6 to 0.05 mol/L ||  ||  ||  || Alterations presence or I
|-
| Fluoride || -54&plusmn;5 || 0.1 to 1900 mg/L || 4 to 8 || &lt; 1 min || 5 to 50 || OH (-1)
|-
| F- ||  || 5e-6 to 0.1 mol/L ||  ||  ||  || Maintain pH &lt; 8
|-
| Iodide || -54&plusmn;5 || 0.1 to 12000 mg/L || 2 to 12 || &lt; 1 min || 5 to 50 || Error in presence of Ag or S
|-
| I- ||  || 1e-6 to 0.1 mol/L ||  ||  ||  || Br (-3.4); Cl (-6)
|-
| Lithium || 54&plusmn;5 || 0.1 to 5000 mg/L || 2 to 12 || &lt; 1 min || 5 to 50 || Na (-2.3); K (-2.4)
|-
| Li+ ||  || 1e-5 to 0.7 mol/L ||  ||  ||  || H (-3)
|-
| Magnessium || 24&plusmn;5 || 2.4 to 2400 mg/L || 3 to 8.5 || &lt; 1 min || 5 to 50 || Ca (-1); K (-3.6)
|-
| Mg2+ ||  || 1e-4 to 0.1 mol/L ||  ||  ||  || Na (-3.9)
|-
| Nitrate || -54&plusmn;5 || 0.6 to 31000 mg/L || 2 to 11 || &lt; 1 min || 5 to 50 || Br (-1.2); NO2 (-1.7)
|-
| NO3- ||  || 1e-5 to 0.5 mol/L ||  ||  ||  || OH (-1.8); AcO (-2.2)
|-
| Nitrite || -54&plusmn;5 || 2.5 to 1000 mg/L || 4 to 8 || &lt; 1 min || 5 to 50 || SCN (-0.2); I (-2.2)
|-
| NO2- ||  || 5.4e-5 to 0.02 mol/L ||  ||  ||  || ClO4 (-2.4); Br (-3.3)
|-
| Perchlorate || -54&plusmn;5 || 1 to 10000 mg/L || 1 to 11 || &lt; 1 min || 5 to 50 || SCN (-1.7); NO3 (-1.7)
|-
| ClO4- ||  || 1e-5 to 0.1 mol/L ||  ||  ||  || I (-1.7)
|-
| Silver || 56&plusmn;5 || 0.1 to 10000 mg/L || 1 to 9 || &lt; 1 min || 5 to 50 || Error in presence of S or Hg
|-
| Ag+ ||  || 1e-6 to 0.1 mol/L ||  ||  ||  || 
|-
| Potassium || 54&plusmn;5 || 0.4 to 3900 mg/L || 1 to 9 || &lt; 1 min || 5 to 50 || NH4 (-2.1); Ca (-3.9)
|-
| K+ ||  || 1e-5 to 0.1 mol/L ||  ||  ||  || Li (-4.3); Na (-4.6)
|-
| Sodium || -27&plusmn;5 || 0.1 to 3200 mg/L || 1 to 9 || &lt; 1 min || 5 to 50 || K (-2.5); Ca (-3)
|-
| Na+ ||  || 3e-6 to 0.1 molL ||  ||  ||  || Li (-3.2)
|-
| Sulfide || -54&plusmn;5 || 0.4 to 8000 mg/L || 12 to 14 || &lt; 1 min || 5 to 50 || Error in presence of Ag or Hg
|-
| S2- ||  || 5e-6 to 0.1 mol/L ||  ||  ||  || 
|}


Slope (mV/dec) = slope of the calibration line (mV/decade of concentration); 54 for monovalent ions and 27 for divalent ions

pH = working pH range