1Accurately measure the hydrogenrich content in water to improve human subhealth. 2The waterproof grade is IP55, with excellent water resistance and field applicability. 3The electrode can be replaced, and the host can be reused, saving costs. 4Used in aquarium, aquaculture, soilless culture, swimming pools and hot springs, school laboratories, chemical industry, food or beverage manufacturing, textile printing and dyeing, paper or pulp bleaching, printing, cooling towers, boilers, washing or sewage treatment. 5The product is small and portable and can be placed in a bag without taking up space.Condition:100% Brand New Item Type:PH MeterMaterial: ABSUses: Used in aquarium, aquaculture, soilless culture, swimming pools and hot springs, school laboratories, chemicals, food or beverage manufacturing, textile printing and dyeing, paper or pulp bleaching, printing, cooling towers, boilers, washing or sewage treatment.Battery Properties: 4 x Button Battery LR44 160mAh (not included)1 xPH Meter1 x Manual1 x Screwdriver1 x Storage Box