The vials are preferentially used on instruments of the following manufacturers: Agilent, Dionex, Shimadzu, Tekmar, Thermo Scientific, VarianAll types of EPA Vials can be delivered against a small surcharge with a certificate of cleanliness that might especially be needed for TOC analysis. A copy of our certificate of cleanliness is shown under the point “Technical Information” on our website. • EPA Vials can be obtained with any type of Screw Seal ND24 already screwed on (see also chapter 11.5 “Pre-Screwed Vials”). • Broad range of EPA Vials in clear and amber glass. • Volumes of 20ml, 30ml, 40ml and 60ml available.