Check the listing for details. pH Test Paper Hydrion Single Roll Dispenser 0-13 HJ-613 JUMBO ROLL 50'. Condition: New. Listed at 15.99 USD. Hydrion Insta-Chek pH Paper The best for wide range, general purpose pH testing. 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]. The Hydrion Insta-Chek pH Papers provide: A direct reading pH paper with the widest range available on a single paperA simple, easy to use single color match for all pH valuesVery distinct, easily matched color separationsHighly Accurate, reproducible readings with an immediate response So easy to use Simply tear off a small strip of pH paper, dip into the test solution, then instantly compare the resulting color with the matching pH color chart. 50-foot roll of test paper and matching color chart. Hydrion Wide Range pH Paper is a general use pH paper. Used in a wide variety of applications including: Chemistry, Classroom Demonstrations, Hospital Laboratories, General Laboratories, Industrial Testing, Food Service, Safety Testing, Emergency Testing, Agricultural Testing