Pipette tip containers

A pipette tip container, comprising:

• an elongate tube having a first length and a first inner diameter, the elongate tube configured to hold a pipette tip having a second length that is greater than half of the first length and the pipette tip having a second outer diameter that is less than half of the first inner diameter of the elongate tube, the elongate tube comprising:
• a sidewall that defines the first inner diameter of the elongate tube and that defines an open end of the elongate tube,
• a rounded end portion that has a concave inner surface, that is opposite the open end, and that, together with the sidewall, defines an interior region of the elongate tube, and
• an annular protrusion that is axially spaced apart from the rounded end portion, that extends radially inward along the first inner diameter defined by the sidewall, and that is formed as a rounded hump, such that when the elongate tube is holding the pipette tip within the interior region and when the elongate tube is lying on the sidewall, the elongate tube contacts a side surface of the pipette tip at only two points along the elongate tube, the two points including a first point along the sidewall located near the open end of the elongate tube and a second point on the annular protrusion;
• and
• a cap secured to the open end of the elongate tube and formed to allow passage of the pipette tip.