Taylor 7-Way Test Strips for Free Chlorine, Total Chlorine/Bromine, pH, Alkalinity, Hardness, CYA w/ Mobile App, 50/Bottle, 12/Case | S-1403-12

As with all perishables, test strips are sensitive to environmental influences and will last longer under controlled conditions. The composition of each test strip determines its shelf life. As a general precaution, replace all test strips more than one-year-old, or at the beginning of a new testing season.