Lamotte Insta Test 3 Swimming pool Test Strips， 50 Strips<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>The Insta-Test 3 measures Free Chlorine 0-10 ppm (or Bromine 0-20 ppm)， pH 6.2-8.4 and Total Alkalinity 0-240 ppm</li><li>Swirl-n-read strip with instant results</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41stfll27sL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/310PBnLHFWL.jpg" noproxy>