Ventisonic LCD Digital PH Meter Tester Aquarium Pool Water Hydroponic School laboratory (Yellow) For monitoring aquarium, fishing industry, swimming pool, school laboratory, food & beverage etc. 100% brand new meter with protective plastic case and calibration screwdriver LCD display with accurate and durable; High accuracy With measuring range from 0.0 to 14.0pH Package Included: 1 x Digital pH meter; 1 x Calibration Adjustment screwdriver; 2 x Pouches of calibration buffer solution; 3 x Batteries Included in pH Meter; 1 x User instruction(English); 1 x Sturdy Plastic Case