Hydrion® Double Roll pH Paper set the standard for quality, accuracy, and reliability.

Double Roll pH Papers consist of two rolls of pH papers packaged in a protective plastic dispenser with stainless steel cutoff lips and two matching color charts

Double Roll pH Wide Range Papers have a clear color match at each full pH unit: [0.0][1.0][2.0][3.0][4.0][5.0][6.0][7.0][8.0][9.0][10.0][11.0][12.0][13.0][14.0]

pH color changes are distinct and easily matched to the color chart.