Aquarium Carbon Dioxide CO2 Monitor PH Indicator Glass Drop Ball Checker Tester (Ball Checker + pH Indicator Set)

Description

Brand new glass drop checker. Suction cups included. Solution is not included in this listing. Size : 3cm diameter. Instruction : Simply add couple drops of test solution and water into the checker. Stick the checker on the edge of the aquarium. Ensure water level cover the opening of the checker.