Abstract: A pipette tip container includes an elongate tube that includes a sidewall that defines an interior region and an open end of the elongate tube. The elongate tube further includes an annular protrusion that extends along an inner circumference of the sidewall, wherein the annular protrusion is configured so that a pipette tip contacts the elongate tube at the annular projection and at a point along the sidewall located near the open end of the elongate tube when the elongate tube is lying on its sidewall. The pipette tip container further includes a cap secured to the open end of the elongate tube and formed to allow passage of the pipette tip.

Abstract: The invention is directed to forming a bond between dissimilar polymer surfaces. By providing one substrate that comprises a vinyl acetate polymer, and then by modifying the surface energy of that substrate, that substrate may be advantageously bonded with a second polymer substrate having a surface whose surface energy has been modified. In one example, the first substrate is a rigid substrate, while the second substrate is a flexible membrane that is comprised of a thermoplastic elastomer and a vinyl acetate.