The Lovibond MD 600 colorimeter from Tintometer tests water-quality parameters in the field or laboratory. It has an LED photodetector array of six light sources that keeps the instrument cool. It supports more than 120 preprogrammed methods, many of which offer multiple ranges and include DPD chlorine, COD, phosphate and molybdate. Operators can use the Open Reagent System (which includes VARIO Powder Packs, tablets and liquids or ampule reagents) for testing. The unit includes on-screen assistance, 20 user-defined methods and the ability to store 1,000 data points. Scroll-driven menus allow users to find the test they need quickly. 800/922-5242; www.lovibond.us.