PuffAdder: A DIY Picospritzer

No not the snake. This is the name Joe Raimondo’s DIY picospritzer, which delivers picoliter to nanoliter “spritzes” of liquid in short pulses.  His blog gives a great step-by-step guide to building one. And if you’re looking for something a little more robust, check out their paper on Openspritzer in Nature where they build and test this device. Commercially, a picospritzer runs for $4,000.