Mastercycler ep realplex real-time thermal cycling system combines Mastercycler ep gradient thermocycler technology with intuitive, multi-purpose software. Modular design allows a choice of two 96-well options — a fast aluminum gradient block or an ultra high-speed gradient S. Two optical modules permit the use of nearly all fluorescent dyes used in real-time PCR. Eppendorf North America, Inc.800-645-3050www.eppendorf.com