These PEEK sample loops contain no metals or other extractable compounds. Therefore, no foreign materials will be introduced into the system. Softener free PE caps are used to avoid the contamination of the tubing. Particularly suited for separations involving proteins, peptides, nucleic acids or other samples of biological origin as well as in IC systems where metal traces may interact with ionic samples or release transition metals that may deactivate ion exchange columns.

For valves ¹/₁₆" O-Ø.