Labtron portable electrolyte analyzer uses a 90 µL sample and delivers results in 25 s for K⁺, Na⁺, and Cl⁻ across multiple sample types. A 7-inch HD touchscreen supports USB, RS232, LIS, and wireless printing. Operates at 5–40 °C and ≤80% RH with encrypted reagent pack and 3.5 kg design.