Book excerpt: "An updated version of the critically acclaimed Laboratory Handbook, this guide to laboratory materials, equipment, and techniques is an important resource for students as well as veteran scientists and lab technicians. From vacuum technology and glass vacuum systems to volumetric glassware, gas-oxygen torches, and cryogenic tanks, The Laboratory Companion provides complete coverage of all commonly used lab equipment, including essential information about its selection, use, cleaning, and maintenance. It clearly explains the historical development and rationale behind how and why things are done in the lab, and includes helpful guidelines and step-by-step procedures for each topic discussed"--back cover.