OpenTrons 15 mL Tube Rack with Large Bottom Holes (Biomek compatible)

This is an OpenTrons 15 mL tube rack, in which the bottom holes have been modified to be significantly larger/deeper, pretty much allowing the tube to almost touch the floor. This increases the stability of the tubes but, more importantly, makes the tube rack compatible with the Biomek i7 Span-8 pipettor. Previously, the top of the 15 mL tubes were just a few mm higher than the max height of the Span-8, making them incompatible.

This file only includes the base, not the top portion (but it is compatible with official OpenTrons 999-00030 tube rack tops). Tops could likely be printed from Brad0440's "Opentrons 15 mL Falcon Tube Rack Top" or sannji's "Opentrons FACS tube rack-fixed" (which would require separating the rack from the bottom).

This is a modification of sannji's "Opentrons Tube Rack with bottom holes", which was a modification of tsuchan's "Opentrons Tube Rack - modified", which was a modification of thehair's "OpenTrons Tube Rack".