DPD Free, Total, & Combined Chlorine Test Kit 0.2-3.0 PPM | LaMotte 3308-01

This Chlorine test kit measures free, total & combined Chlorine using Chlorine DPD tablets and the Octa-Slide 2 Comparator. Range/sensitivity is 0.2 – 3.0 ppm Cl. Test kit includes: Chlorine DPD #1R Tablet (50) Chlorine DPD #3R Tablet (50) Test Tubes plastic w/caps (2) Octa-Slide Viewer Chlorine Octa-Slide Bar 0.2-3.0 ppm Free, combined, and total chlorine may be determined using DPD with either colorimetric or titrimetric methods. These determinations are generally limited to concentrations of 0-10 ppm, although the FAS titration can test higher concentrations with the addition of more DPD indicator. Higher concentrations require the iodometric titration, whereby the sample is acidified and iodide is added, which is oxidized by chlorine to iodine and is titrated with a standard thiosulfate solution.