Feature 1HD Display: The 2 in 1 water tester has a HD LCD display, and the large screen displays the values to ensure clear and easy reading 2Reliable Measurement: The water tester has a high accuracy electrode probe, and the high accuracy of water measurement ensures reliable measurement values 3ABS Material: The water quality test meter is made of ABS material, which is wear resistant and durable, and has a long service life 4Small and Compact: The small and compact body does not take up too much use space, which is convenient for carrying and use 5Scope of Application: The digital water tester can be used in drinking water, sewage treatment, water purification, fish tank, aquaculture, swimming pool, hydroponics, medicine treatment, etcItem Type: Water TesterMaterial: ABSMeasurement Range: 0 to 19.99pptResolution: 0.01pptAccuracy: 2% F.SWorking Temperature: 0 to 50Temperature Compensation: 0 to 50Battery: 4 x AG13 Button Battery (not included)Application: Salinity MeterWeight: Approx. 139g/4.9oz .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xWater Tester1 x User Manual1 x Screwdriver1 x BoxNoteShipped Without Battery