Hydrion Insta-Chek pH Paper, the ultimate in wide range, general purpose pH papers has a distinct color match at full pH units:[1.0][2.0][3.0][4.0][5.0][6.0][7.0][8.0][9.0][10.0][11.0][12.0].
Hydrion Insta-Chek Single Roll pH Paper provides:
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 1-12 pH Paper is a general use pH paper that can be used for:
Classroom Demonstrations
Hospital Laboratories
General Laboratories
Industrial Testing
Food Service
Safety Testing
Emergency Testing
Each carton contains 10 kits, each consisting of a 15-foot roll of test paper and matching color chart. Provides for approximately 1000 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