About This ✔DETECTION LEVELS: Free Chlorine 0. 0 to 6. 0 ppm ✔EASY TO USE: The eXact strip 2-step, dip and read process makes the product ideal for technical and non technical users alike for detection of Free Chlorine in water. ✔COMPLETE KIT: Bottle of 50 test reagent strips for use with 10mL photometers/colorimeters. ✔DESIGNED FOR EXACT PHOTOMETERS: Bottle contains 50 test strips for use with an eXact photometer. Gives fast, accurate, digital results ✔ACCURATE AND RELIABLE: Components are tested by Quality Control personnel at each step and are rejected if they are outside of specifications. Standards are prepared using calibrated equipment, and concentrations are confirmed by recognized reference methods ✔HIGHEST QUALITY: ITS, manufactures water testing products in their USA facility in an environment that allows for reproducibility, accuracy, and traceability based on Good Manufacturing Practices Overview Brand : Industrial Test Systems Ph Range : 6.5-8.5 Recommended Uses For Product : Home Water, Tap Water, Well Water, Water Test, Chlorine Test Unit Count : 1.0 Count Manufacturer : Industrial Test Systems, Inc (Sensafe) - BISS