Current Newsletter (new) Newsletter Archive Application Articles Technical Articles Service and Maintenance Articles Press Releases and Marketing Support Information Getting Service for Your Device About Service Contracts How to Return Equipment for Service YouTube Video Library Press Releases / Marketing & Sales Articles 2009 Quadra Model Comparison Serial Dilution Testing 2007 Quadra Pipette Tips 2006 Why Should I Buy a Quadra? 2005 Features and Benefits of the Quadra Plus Operational Functionality