***Direct from the Manufacturer - USA*** eXact iDip Photometer #486101 CONTAINS 1 EXACT IDIP 525 PHOTOMETER, 1 CLEANING BRUSH, 1 INSTRUCTION MANUAL, AND 6 TESTS EACH OF: TOTAL ALKALINITY, PH, FREE CHLORINE (DPD-1), AND COMBINED/TOTAL CHLORINE (DPD-3). The eXact iDip Smart Photometer System is the first, Patented, handheld photometer to provide 2–way communication with a Bluetooth Smart (4. 0) ready Apple or Android smartphone/tablet. The eXact iDip photometer is waterproof (IP67) and has a permanent built-in sample cell. This eliminates the separate cell and simplifies the test procedure, which improves accuracy. The multilingual eXact iDip app system allows for instantaneous software updates/upgrades, test customization, and mobile sharing of results with spreadsheet! The app comes with 4 tests installed and over 35 additional parameters available for easy app purchase. The eXact iDip system gives you a truly customized system that's accurate, saves money, your time, and uses GREEN chemistry. !