Hydrion pH Paper, the ultimate in wide range, general purpose pH papers has a distinct 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].
Hydrion pH Papers provide:
A direct reading pH paper with the widest range available in a single paper
A simple, single color match for all pH values
Distinct and easily matched color separations
Accurate, reproducible readings with an immediate response
Hydrion Wide Range pH Paper is a general use pH paper. A sample of its diverse pH applications include:
Classroom Demonstrations, Hospital Laboratories, General Laboratories, Industrial Testing, Food Service, Safety Testing, Emergency Testing, Agricultural Testing In Vitro Testing
Each carton contains 10 kits, each consisting of a 15-foot roll of test paper and matching color chart. Each kit provides enough paper for approximately 100 tests. A carton of 10 provides approximately 1,000 tests.
Warning: 
This product can expose you to Phenolphthalein, which is known to the State of California to cause cancer. For more information go to www.P65warnings.ca.gov