Hach test strips are easy to use and read. Test many samples in just minutes and make immediate on-site evaluations. In the lab, test strips are ideal in pre-test screenings to detect the presence of materials that might interfere with testing. Range is 0-50 ppm (Increments 0, 5, 15, 30 and 50).
Simply dip the strip into the sample and match the color to the chart to determine concentration. Bottles contain 50 test strips.