🌈 Unleash the Power of pH Testing! Distinct color match for each full pH unit ensures easy interpretation. Eco-friendly and hassle-free—just unroll and test! Lightweight design (9g) and compact dimensions (5.08 x 6.35 x 1.91 cm) for easy storage. Experience accurate, reproducible readings with instant response. Test pH levels from 0 to 13 with a single roll. Color match at each pH unit 15 ft test paper Accurate readings 0-13 The Hydrion pH Paper (93) with Dispenser and Color Chart offers a full range of pH testing from 0 to 13, featuring a 15-foot roll of high-quality test paper. With accurate and reproducible readings, this essential tool is perfect for professionals seeking reliable results in a compact, battery-free design.