Features: Achieve fast and accurate pHs readings with our Universal Application pHs Test Strips, designs for both urine and saliva analysis with a reliable Double pad system covering a Ranges from pHs 4.5 to pHs 9.0. Each Strips features multiple pHs paper segments that change color instantly upon contact with solution , allowing for precise measurement when compared to the included color chart. Suitable for students, home users, laboratory researcher , and water quality enthusiasts search stable result in various testing situation . Perfect for applications such as household drinking water testing, swimming pool monitoring, scientific experiments, and agricultural soil analysis. Our pHs test strips crafted from high quality materials, ensuring durability and accuracy, making them essential tool for anyone needing quick and pHs assessments. Specifications: Material: paper+plastic Package Includes: 1 Box pHs Test Strips note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.