Labotronics Electrolyte Analyzer LB-22ELA uses ion-selective electrode (ISE) technology to measure K⁺, Na⁺, Cl⁻, Ca²⁺, pH, Li⁺, and TCO₂ in venous whole blood and serum samples. It requires a sample volume of 80–120 µL and supports processing up to 55 samples in a row. Featuring a 4.3-inch touchscreen, internal calibration, and a built-in scanner, it simplifies sample identification and result monitoring. Its 500,000-result storage capacity and thermal printer support clinical laboratory testing.