Our water test strips are great testing tools for testing the quality of different water sources. No need to spend of money on pool water tests. With our water test strips, you can test your well water, aquarium, pool water, hot tub, and spa. Features -Color:Multi -Material:PET -Size:9.00X0.50X0.20cm/3.54X0.20X0.08in -Weekly test the water if water or fish problems appear, monitor your fish tank, ensure your to grow happier and healthier. -Easy to operate and test, just need to simply dip water and compare with large color chart designed on bottle. -Very simple operation steps, no other auxiliary consumables are required. Convenient and practical. -Suitable for fish tank, swimming pools, spas and other industries, bringing you and comfy living space. -Portable size and easy to carry out. You can take it everywhere, which can give you a great usage experience. Package list: 4 of Testing Strips