3-D printable micropipette

By T Baden, inspired by the Straw Pipette (K Walus).
 

Biropette: OpenSCAD design

Biropette: Components

Injecting colored water

Printing full plate

Pipettes on rack

P200 assembled

Optimised for fast printing without supports. The pipette works by creating an air-tight chamber below a membrane (e.g. a lab glove) pushed upon by a little piston at the end of a biro-filling (hence “Biro”pette). The accuracy of the system depends on printer precision, and in the best cases tested so far is in the order of ~5 microliters for a “P200”.

Note that key variables are flagged in the OpenSCAD files and linked into the Thingiverse customiser – like this different volume and precision builds can be easily implemented.

Project materials

• Stl and OpenSCAD files and project description (Thingiverse)
• Assembly manual
• Optional pipette rack (Thingiverse)