Analyze your samples on-site with these portable meters. All feature automatic temperature compensation and built-in cell cup. Cup contains self-maintaining electrodes that never need replatinizing. Optional conductivity range extender (sold separately) expands range by a factor of 10. Minimum sample volume is 25 ml. Maintenance-free built-in electrode replatinizing required automatic temperature compensation. Use this meter to Test both standard and high-purity water samples. Meter has five conductivity ranges and one resistivity range.