Product description: PH CL2 Chlorine Tester Essential tool for quick and accurate readings of ph & chlorine as chlorine is the most commonly used disinfectant for water by killing bacteria, algae and microorganisms. An ideal tool for keeping your pool or spa within the safe Chlorine and PH ranges, no more chemicals or no more guess work. An electro-tester for testing pH and chlorine (Cl2) levels in water for routine monitoring of pH and chlorine levels of swimming pools, spas and different water sources. NOTE: Probes are advice NOT to immerse in any liquid other than pool or spa water. Specifications Recommended chlorine level for pools and spa is 1.2 to 1.7ppm Recommended pH level for pools and spa is 7.2 to 7.8 Dimension Main unit:190 x 120mm Probe with handle: 150mm long Probe (only): 48mm long Cable (only): 130mm long Power Supply: 1 x AA Alkaline Battery (1.5V) Weight: 160g (excluded battery) Package included 1 x pH and Cl2 Tester with Probe 1 x Instruction Manual 1 x Sand Paper