Shop our selection of micro-insert products to ensure the most accurate and reliable analysis of your lab samples. Micro Inserts decrease the surface area inside chromatography vials, enabling maximum sample recovery. They can be used with screw-top, snap-top or crimp top vials. Our micro-insert products are available in conical bottom, flat bottom, with Mandrel Interior's and Polymer Feet forms. They are designed to fit several sizes of chromatography vials such as ND8, ND9, and 8-425 threaded vials.