pH Paper, Test Form Paper, Overall Length 15 ft, Test Type pH Test, Testing Parameter One pH, Overall Width 1/4 in, Parameter Measurements Included 0 to 13 pH, Number of Tests 2,000, pH Resolution 1.0 pH, Test Detects For pH, Includes (10) Dispensers, Additional Refill Roll, Roll of Test Paper and Matching Color Chart, Parameter Five Measurements Included Not Applicable, Parameter Four Measurements Included Not Applicable, Parameter Three Measurements Included Not Applicable