Jasco Inc., with offices worldwide, including in Easton, Md., and Restek Corp. of Bellefonte, Pa., are collaborating on ultrahigh-precision liquid chromatography instrumentation and 1.9-μm columns. Restek will supply small-particle column kits that will be included with Jasco instruments. Jasco manufactures the X-LC system for ultrahigh-pressure separation. Restek has added the Pinnacle DB 1.9-μm columns to its product line and offers a selection of stationary phases on sub-2-μm silica particles.