100 PK Plastic Active Chlorine Bleach Test Strip， High Level Up To 2000ppm For Sanitizers and Disinfectants DESIGNED FOR DAYCARES & SENIOR HOMES!</br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/51XAtkpSOLL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31lI17NUxGL.jpg' noproxy></br>