This Hydrion pH Test Paper is a general-purpose pH indicator roll used to quickly measure the acidity or alkalinity of liquids across the full 0–14 pH scale. Using it, you can rapidly check whether a solution is strongly acidic, neutral, or strongly alkaline in lab, classroom, food service, or industrial settings.

• Wide pH range from 1 to 14, with distinct color transitions at each full pH unit for easier reading.
• Immediate color response that gives quick, reproducible pH results without instruments.
• Supplied with a printed color comparison chart to match strip color to approximate pH value.