precision electrical conductivity tester for exact water quality measurements in labs and other environments where accurate EC readings are essential. Batterysaving auto off: automatically shuts down after 10 minutes of inactivity to extend battery life and promote efficient use when not in use. Calibrated for accuracy: ships precalibrated with a 342 ppm NaCl solution, providing reliable accuracy right away without additional setup. Easy setup with T fitting: includes a convenient 1/4 inch T fitting for simple installation, enabling quick setup without the need for professional assistance. Use scenarios: • Laboratory QC and routine water analysis to verify sample integrity and process control. • Water treatment or recycling systems to monitor conductivity and ensure compliance with treatment targets. • Hydroponics, aquaculture, or aquarium applications to track irrigation or reservoir water quality for plant and animal health.