AquaChek 541604A Select Kit Test Strip for Swimming Pools 2 Pack

Each kit contains 50 test Strips, a color chart & comparator, & a booklet entitled the Complete guide to pool & spa care. AquaChek select is ideal for customers who want a more Complete Analysis of their pool or spa water. Get 7 important test results in just one dip!  dip an AquaChek Select strip in your pool or spa water for one S & remove it immediately. You get test results in S! to keep your pool water clean & healthy, test the water at two ends or sides of the pool a minimum of twice a week!  if used in a spa we recommend testing it before & after each use.  it's also a good idea to write down your results each time you test. Tests for 7 important chemistries in S: total hardness, total chlorine, total bromine, free chlorine, pH, total alkalinity, & Cyanuric acid. 2 Pack includes two kits, each including 50 Strips.