Specification Brand : Industrial Test Systems Label : Industrial Test Systems, Inc (Sensafe) Manufacturer : Industrial Test Systems, Inc (Sensafe) ProductGroup : BISS Basic ProductTypeName : CHEMICAL_TEST_STRIP Publisher : Industrial Test Systems, Inc (Sensafe) SmallImage_Height : 25 SmallImage_URL : https://m.media-amazon.com/images/I/31VQ6NcEn2L._SL75_.jpg SmallImage_Width : 75 Studio : Industrial Test Systems, Inc (Sensafe) Title : Industrial Test Systems WaterWorks 480124 Free Chlorine Test Strip, Ultra High II Range, 61 Seconds Test Time, 0-2000ppm Range (Bottle of 50) (3)