SPEX CertiPrep was founded in 1954 to provide superior sample preparation equipment and certified reference materials for analytical spectroscopy. We have the experience, skills, and specialized training to a serve analytical scientists throughout the world. Feel free to browse our vast selection of products for solving your analytical problems. The SPEX CertiPrep Certified Reference Materials (CRM) Division offers an unparalleled selection of inorganic standards for AA, ICP, ICP/MS and IC, organic standards for GC and GC/MS, and a range of products for proficiency testing environmental analyses. Our Sample Preparation Division has a full range of laboratory mills, presses, and pellet dies, plus fusion fluxers, XRF sample cells and window films, as well as PrepAid© binders and grinding aids. SPEX CertiPrep Ltd. is the European subsidiary of SPEX CertiPrep Inc. In addition to SPEX CertiPrep CRMs we offer a wide range of Solid and Matrix based Certified Reference Materials to customers worldwide. Our GSRM catalogue contains a range of over 8000 RMs and CRMs sourced from over 100 producers across the globe. This choice combined with our experience and expertise in the relevant techniques puts us in a unique position to give independent and unbiased advise to customers on available and alternative reference materials. To make ordering easier, SPEX CertiPrep now offers our "e-commerce" site. Simply register with a new user ID and password and order through our secure and fast website.