• Rugged, floating and waterproof • Replaceable pH electrode featuring an extendable cloth junction • Measurement stability and battery life indicators • Freeze display feature • Automatic temperature compensation • User adjustable Conductivity/TDS conversion factor and temperature coefficient factor (ß) • Automatic shut-off • Comes with a pH electrode cartridge, a Conductivity/TDS graphite electrode and 4 x 1.5V batteries • Conductivity/TDS auto-calibration: 1 point • pH auto-calibration: 1 or 2 points