The MD 100 COD Set from Lovibond Tintometer supplies the user with everything required to perform the COD test. This single-parameter colorimeter is capable of measuring three ranges of COD. When purchased as a set, the instrument includes reagents for testing two ranges, the RD 125 Reactor for sample digestion, and a tube test rack. COD vials are offered in packs of 25 or 150 tubes and meet U.S. EPA testing requirements. 941/756-6410; www.lovibond.com; Booth #2487.