The Lamotte 3240-LI DC1500 Chlorine Colorimeter Kit, ideal for both field and lab use, covers the entire critical chlorine range of 0-4 ppm with an MDL of 0.03 ppm. The 3240-LI DC1500 Chlorine Colorimeter Kit includes liquid reagents for 140 tests, six sample vials, and a sturdy carrying case. A complete, economical package!