0.0-13.0 Hydrion 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.
pH color changes are distinct and easily matched to the color chart.
This Hydrion Double Roll dispenser contains one roll of 0.0 - 6.0 pH paper, with color match points at each .5 pH unit:[0.0][0.5][1.0][1.5][2.0][2.5][3.0][3.0][3.5][4.0][4.5][5.0][5.5][6.0], and one roll of 6.5-13.0 pH paper with color match points at [6.5][7.0][7.5][8.0][8.5][9.0][9.5][10.0][10.5][11.0][11.5][12.0][12.5][13.0] .
Each carton contains 10 dispensers, each consisting of two(2) 15-foot rolls of test paper and matching color charts.