Extra-long 6" (15.2 cm) pH sticks help reduce the risk of contact with the sample-ideal for chemical spills or any materials you want to avoid touching. Sticks give a simple, single color match for all pH values from 0 to 13 in distinct, bright color separations. Includes ten pH spill sticks and color matching chart. Pack of 10 strips and color chart. Keep a safe distance with pH spill sticks.