pH Test Paper, 0-13 Half Step comes in a double roll. The rolls are packaged in a protective plastic dispenser. The dispener has stainless steel cutoff lips and two matching color charts. pH color changes are distinct and easily matched to the color chart.
Roll 0.0 – 6.0 (wrapped in orange) contains color match point at each .5 pH unit
Roll 6.5 – 13.0 (wrapped in red) contains color match point at each .5 pH unit