Instran Online Sodium (Na) Concentration Meter
Continuous measurement of sodium concentration in water is possible!
Method - Ion Selective Electrode Analysis is performed using the Standard Known Addition method (SKA). This process involves two measurements. The difference between the two and the slope obtained during calibration are used to calculate the concentration. By using both measurement values, changes in the matrix sample are corrected, and the calculation of results is based on the relative mV difference rather than absolute values. This helps to avoid external interference. Measurement Principle The sample is adjusted to pH 8-11 using an Ion Strength Adjuster (ISA). After that, the first measurement is taken. Next, a small amount of high-concentration sodium solution is added. Finally, a second mV reading is taken, and the results are calculated. The advantage of this method is that the rapid response of the electrode allows for quick analysis. The main interfering cations are either absent or present in very small amounts. Furthermore, the ISA solution prevents these interferences. *Interfering factors: Lithium, Potassium, Rubidium, Ammonia, Silver, Thallium
basic information
Specifications Measurement range: 0–500 ppb / 5 ppm / 20 ppm / 50 ppm High concentration adjustment possible through internal dilution Accuracy: ±2% Reproducibility: ±2% Resolution: 0.01 ppm or 0.1 ppm Analysis time: Approximately 10 minutes Calibration: Single-point calibration ISE: Sodium (Na+) electrode Reagent consumption Reagent 1: 1 ml per analysis (1 L/month) Reagent 2: 1 ml per analysis (1 L/month) *Monthly consumption is calculated based on one analysis per hour.
Price range
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Model number/Brand name
Instran
Applications/Examples of results
Multi-purpose
