Loveland, Colo.-based Hach Co.’s new 482-page catalog is filled with new products including GLI’s on-line electrochemical instrumentation. Also included are the new OptiQuant SVI™ sludge volume analyzer and the Auto CAT™ 9000 automatic chlorine titrator. The new catalog has easy to use “quick reference guides?? throughout the book to make finding a solution that much easier. New process flow diagrams make it possible to understand the processes.