Features 1、Anti‑rust and anti‑corrosion titanium alloy probe makes the measured value more accurate and reliable. 2、Double stainless steel clips, the connection is more stable and the data is more accurate. 3、High‑definition LED display, clear readings, easier measurement process. 4、Suitable for hospitals, households, commercials, swimming pools, disease control centers, water plant laboratories, aquaculture industry. 5、Portable design, small and light, can be used in various scenes anytime and anywhere. Specification Item Type: TDS Meter Model: H4 Material: ABS Measuring Range: 0-9990ppm Error: ± 2% Application Industry: Hospital, Household, Commercial, Swimming Pool, Disease Control Center, Water Plant Laboratory, Aquaculture Industry Battery: 2 x LR44 Button Batteries (Batteries Not Included) Package List 1 x TDS Meter(Batteries Not Included)