Direct measurement method, considered the most accurate ISE method, is used in Konelab analyzers. A sample volume as low as 50 ul is sufficient for the measurement of Na+, K+ and Cl-. Optionally in all analyzers Li+ is available as well as in Konelab 30 and 60 Ca2+ and pH. Electrodes are ready-to-use. Highly developed Konelab analyzers are integrated systems for routine clinical chemistry, ISEs, specific proteins, TDMs and DATs.The CE marked electrodes are compliant with the IVDD.<