AquaChek® Total Hardness 25 Test Kit Strips<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Updated part number for the old 611213</li><li>Easy to use and maintain your swimming pool or spa</li><li>Takes about 15-30 seconds to show results</li><li>A must for a swimming pool or spa owners!</li><li>Total Hardness</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31H2DNWW9GL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/11vMAT6WtfL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31ZxzcQlGqL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41oRSSuBqLL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/615zSYdE6CL.jpg" noproxy>