The Fisher Scientific Hydrion Insta-Chek pH Paper provides a convenient and reliable way to measure pH levels across a wide range, from 0 to 13.0. This 1/2 inch wide, 50-foot long roll comes in a dispenser for easy dispensing and use. Ideal for a variety of applications, this pH paper offers quick and accurate readings, making it an essential tool for laboratories, educational institutions, and industrial settings where precise pH monitoring is crucial.