Stanley 22811 IndXer 4-Way Test Strips<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>For maintaining proper water chemistry</li><li>50 strips per kit</li><li>Analyzes four chemical factors: Free Chlorine， Bromine， Alkalinity， pH</li><li>Dip in water for instant reading</li><li>Comes in easy-to-store container</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41TdTCyw4nL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31gf5MPmf7L.jpg" noproxy>