Pentair R161566 3-Way Rapid Test Strip with Display Box<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>3-way rapid test strips</li><li>Include display box</li><li>For free chlorine or bromine， pH， and alkalinity</li><li>50 rapid tests per bottle Include display box</li><li>Measures 9-1/4-inch length by 8-1/4-inch height by 8-inch width</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51qET5EImgL.jpg" noproxy>