These are parts used to set up a flow chemistry apparatus for ozonolysis. These are made from algae oil and used to make renewable and biodegradable plastics at UC San Diego. The paper on this methodology is freely available (here, when published). Some of these items were designed from scratch. Others have been remixed from available designs – big thanks to Dr. D-Flo (https://www.drdflo.com/syringe) and ajw05001 (https://www.thingiverse.com/thing:2898101).