The basic tool for measuring ph chlorine quickly and accurately is the most commonly used water disinfectant for killing harmful, algae and microorganisms. Features: The fine tool for keeping a pool or spa in a safe chlorine and pH range, without chemicals or guesswork. This electric meter saves you time and money.Quickly test PH, organic pollution and harmful substances in water.Large screen displays the test result on pH and chlorine level for easy and accurate reading.Easy to operate and convenient to carry, you can quickly test whether Chlorine and PH are in the fine range. No pollution, no consumable, self-cleaning. Specifications:Material: Plastic The recommended chlorine level for swimming pools and spas is 1.2 to 1.7 ppm Recommended pH for swimming pools and spas is 7.2 to 7.8 Main unit: 190mm x 20mm Handle Probe: 150mm long Probe (at): 48mm long Cable(): 300mm long Power supply: 1 aa alkaline battery (1.5v) Weight: 160g b (without battery) include: 1 ph and Cl2 probe tester 1 manual 1 sheet of sandpaper Standard factory packaging Packaging Information Unit Type: Weight per Piece: 0.221kg (0.49lb) Packing: 19cm x 12cm x 5cm Delivery Quantity: 1piece Note: Manual measurement, there may be 1-2cm/1-3g error, which is not a quality problem. Due to different screen displays, there may be a color difference between the real object and the picture, and the main picture shall prevail .