Tests for Free Chlorine/Bromine, pH and Total Alkalinity. Get the best of both worlds the ease and accuracy of AquaChek test strips, plus advanced digital technology. Just dip the test strip in your pool or spa, insert the reader, and get fast, accurate results in seconds. You'll enjoy: Fast, accurate results in 15 seconds with technology designed specifically for pool and spa analysis and no more color matching, a large, easy-to-read LCD screen that displays test results. Kit Includes: TruTest Digital Test Strip Reader, User's guide in 15 languages, Pool Care and Treatment Information, 25 TruTest Digital Strips