3-D printable micropipette
By T Baden, inspired by the Straw Pipette (K Walus).
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.