Specification Brand : Industrial Test Systems Label : Industrial Test Systems, Inc (Sensafe) Manufacturer : Industrial Test Systems, Inc (Sensafe) NumberOfItems : 200 PartNumber : 1 ProductGroup : BISS Basic ProductTypeName : CHEMICAL_TEST_STRIP Publisher : Industrial Test Systems, Inc (Sensafe) SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/414Lk7JCodL._SL75_.jpg SmallImage_Width : 39 Studio : Industrial Test Systems, Inc (Sensafe) Title : Industrial Test Systems WaterWorks 480024 Free Chlorine Test Strip, Ultra High Range, 31 Seconds Test Time, 0-750ppm Range (Bottle of 50) - Set of 4