Lamotte 2984LR Insta-Test Hydrogen Peroxide Single Factor Test Strip， 0 ppm-50 ppm Range (Vial of 25 Strips)<img src="http://ecx.images-amazon.com/images/I/41UFtIAAhyL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41%2BHAeG0leL.jpg" noproxy>