The MD 600 multiparameter colorimeter from Lovibond Tintometer tests for a wide range of water-quality parameters and is ideal for use in either the field or laboratory. Using the Open Reagent System (which uses VARIO Powder Packs, tablet, liquid and ampule reagents) it has a six-LED photo detector array and supports over 120 preprogrammed methods (from alkalinity through zinc) and 20 user-defined methods. Up to 1,000 data sets can be stored in the instrument’s internal memory to ensure good recordkeeping and can be transferred to a computer or printer through user-friendly outputs. As new methods are developed, users can download updates for free. Many parameters have the flexibility of using the Powder Pack, tablet and/or liquid reagents. 800/922-5242; www.lovibond.us.