DescriptionThis item is made of premium material, which is safe and practical to use. The pH level test papers are especially designed for testing alkaline or acid level of any liquid, water ect. Its pH level ranges from 5.5 to 9.0, which perfectly suits for water tests.Features-Color: As shown. - Material: Paper. - Made of high quality, you can get an accurate result. - PH level range is from 5.5 to 9.0, which suits for most water tests. - It is easy to get your result and convenient to use. - Cost-effective, convenient and portable. - Suitable for fish tank and aquarium. - Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!