Build to Last: Colorchanging pH indicator solution provides accurate and dependable pH readings. Its strong, wearresistant construction ensures longevity in any laboratory or testing environment. Made with grade ingredients, it delivers longlasting performance for continuous use. Convenient Testing Tool: pH detection liquid helps maintain aquarium water quality, enabling precise testing and easy monitoring. Easy Testing: To use, simply immerse the tester in water and wait a few moments for dependable results. With easy operation, it is suitable for both novice and experienced users to achieve accurate readings anytime, anywhere. Wide Range of Applications: pH test reagent suitable for diverse aquatic habitats, extensively used in freshwater and seawater aquariums for its multifunctional capacity. Use Scenarios: 1) Routine maintenance in home freshwater or marine aquariums to monitor pH. 2) Breeding tanks that require precise pH control. 3) Laboratory, classroom, or research settings where quick, reliable pH measurements are needed.