All parts biocompatibleIdeal kit for all HPLC usersIncludes fittings, ferrules, tubing, mobile phase filters, a union, and other useful tools and accessoriesFor a number of interesting LC applications involving proteins, peptides, nucleic acids, or other samples of biological origin, metal systems may interact with samples or release transition metals that will deactivate columns.Replacing stainless Steel parts (such as tubing fittings, ferrules, filters, etc.) with PEEK creates a biocompatible environment for samples and mobile phase.The PEEK starter kit is ideal for anyone working in the field of bio-chromatography. It consists of fittings, ferrules, tubing, and mobile phase filters, as well as a union, our Clean-Cut tubing cutter, and other useful accessories like our tubing elbows—all boxed together for a very competitive price!