The AquaChek Select Connect Kit (541640) Refill is ideal for those who have already purchased the AquaChek Select kit and just need additional test strips. Each 50-count refill bottle contains 7-in-1 test strips and a color chart for accurate results. Test your pool or spa water a minimum of twice a week for best results. Get precise and reliable results quickly and easily!
Tests for: total hardness, total chlorine, total bromine, free chlorine, pH, total alkalinity, and Cyanuric acid.