Made of high-quality filter paper to ensure high accuracy. Get reliable, fast readings in just 5 seconds, perfect for a variety of testing needs. Comprehensive pH Range: These versatile pH test strips cover a full range of 1-14, suitable for testing a wide range of substances from highly acidic to highly alkaline. Ideal for both professional and home use, ensuring you get accurate pH measurements. USER-FRIENDLY DESIGN: These pH test strips have a simple design that allows you to easily compare your results to a pH color chart. They are lightweight and portable, making them ideal for on-the-go testing in a lab or field setting. Versatile Testing Tools: Suitable for a variety of applications, including chemical experiments, water analysis, and soil pH testing. They are also suitable for testing pH in pet water and homemade soaps, making them a must-have for a variety of testing scenarios. IMPORTANT USAGE INSTRUCTIONS: To ensure accuracy, avoid dipping the test strip directly into the solution. Instead, use a dropper or glass rod to drop the liquid onto the test strip. This method prevents contamination and provides a true reading of the solution's pH. Colour:As Shown Material:Paper Package Contents: 30 * pH test paper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.