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Accurate measurement of effective ion concentration in the lab Measuring effective ion concentration with ion selective electrodes (ISEs) is important in applications such as wastewater, drinking water, environmental testing, and the food/beverage industry. The TruLine series of combination ISEs is designed to meet the most demanding challenges of determining effective ion concentration in the laboratory setting.
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Accurate measurement of effective ion concentration in the lab Measuring effective ion concentration with ion selective electrodes (ISEs) is important in applications such as wastewater, drinking water, environmental testing, and the food/beverage industry. The TruLine series of combination ISEs is designed to meet the most demanding challenges of determining effective ion concentration in the laboratory setting. The TruLine ISEs can be connected to the YSI TruLab 1320(P), the YSI MultiLab 4010-2 (with BNC adapter), the YSI MultiLab 4010-3 (with BNC adapter), and other ISE instruments that feature BNC connection. The TruLine ISEs are refillable and feature a built-in double-junction reference system, allowing for a long electrode life and optimum performance in the lab.
| Parameter | Technology | Features | Range | Slope | pH Range | Interferences | Applications/Notes |
| Ammonia (NH3) | Gas-sensing | Replaceable/ refillable membrane modules, pH sensor inside |
0.02 to 17,000 mg/L | 54 to 59 mV/decade | Must be 11 or higher to make NH3 gaseous | Few, voltile amines | Wastewater, aquaculture, agriculture, industrial. pH shift cause by ammonia gas is correlated to concentration. |
| Ammonium (NH4+) | Polymer/PVC membrane | Refillable, replaceable sensor modules | 0.02 to 1,800 mg/L | 54 to 59 mV/decade | 4 to 10 | Few, Na+, K+ | Wastewater, environmental, industrial, food/beverage |
| Bromide (Br-) |
Solid state | Refillable, non-replaceable sensor | 0.4 to 79,900 mg/L | 54 to 59 mV/decade | <12 | I-, Cl-, CN-, NH3 | Pool, spa, industrial |
| Cadmium (Cd2+) | Solid state | Refillable, non-replaceable sensor | 0.1 to 11,200 mg/L | 26 to 29 mV/decade | 2 to 8 | Hg2+, Ag+, Cu2+, Pb2+ | Industrial, environmental |
| Calcium (Ca2+) | Polymer/PVC membrane | Refillable, replaceable sensor modules | 0.02 to 40,000 mg/L | 25 to 29 mV/decade | 2.5 to 11 | Pb2+, Hg2+, Si2+, Mg2+, Cu2+, K+, Tris+, Na+, others | Aquariums, industrial, food/beverage |
| Chloride (Cl-) |
Solid state | Refillable, non-replaceable sensor | 1.8 to 35,500 mg/L | 54 to 59 mV/decade | 2 to 12 | CN-, Br-, I-, OH-, S2-, NH3 | Industrial, wastewater, drinking water, food/beverage, environmental. Store in dark when not in use. |
| Copper (Cu2+) | Solid state | Refillable, non-replaceable sensor | 0.06 to 6,400 mg/L | 26 to 20 mV/decade | 2 to 6 | Hg2+, Ag+, Fe2+, Br-, Cl- | Industrial, environmental. Also known as Cupric ISE. |
| Cyanide (CN-) | Solid state | Refillable, non-replaceable sensor | 0.2 to 260 mg/L | 54 to 59 mV/decade | 10 to 14 | I-, Br-, Cl-, S2- | Industrial, environmental |
| Fluoride (F-) |
Solid state crystal | Refillable, non-replaceable sensor | 0.02 mg/L – saturation | 54 to 59 mV/decade | 5 to 7 at low range, 11 at higher range | OH- | Drinking water, industrial. Lanthanum fluoride crystal is the sensor. |
| Iodide (I-) |
Solid state | Refillable, non-replaceable sensor | 0.006 to 127,000 mg/L | 54 to 59 mV/decade | <14 | CN-, Cl-, S2O32-, S2-, NH3 | Drinking water, industrial, food/beverage |
| Lead (Pb2+) |
Solid state | Refillable, non-replaceable sensor | 0.02 to 20,700 mg/L | 26 to 29 mV/decade | 4 to 7 | Hg2+, Ag+, Cu2+, Fe2+, Cd2+ | Industrial, environmental |
| Nitrate (NO3-) | Polymer/PVC membrane | Refillable, replaceable sensor modules | 0.4 to 62,000 mg/L | 54 to 59 mV/decade | 2.5 to 11 | Few, ClO4-, ClO3-, I-, F- | Environmental, industrial, agriculture, food/beverage |
| Potassium (K+) | Polymer/PVC membrane | Refillable, replaceable sensor modules | 0.04 to 39,000 mg/L | 54 to 59 mV/decade | 2 to 12 | Cs+, NH4+, TI+, H+, Ag+, Tris+, Na+, Li+ | Agriculture, food/beverage, environmental, industrial |
| Silver/ Sulfide (Ag+/S2-) |
Solid state | Refillable, non-replaceable sensor | 0.01 to 107,900 mg/L (Silver); 0.003 to 32,100 mg/L (Sulfide) | 54 to 59 mV/decade (Silver); 26 to 29 mV/decade (Sulfide) | 2 to 12 | Hg2+ | Industrial, environmental, food/beverage |
| Sodium (Na+) | Glass sensor | Refillable, non-replaceable sensor | 0.1 to 23,000 mg/L | 54 to 59 mV/decade | >9 | H+, K+ | Industrial, agriculture, power, food/beverage |
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