Tell us about yourself!
A common trick even on high end equipment is to split the fluid flow. put on a t or y splitter and clamp the wash line to restrict flow mechanically. Divert the other large volume flow back to the wash reservoir and you will have little waste. A 0.2 micron filter inline would also help keep everything sterile.
How to Connect an Electronic Balance or Scale to a PC and Read Weight Values Directly into Excel
Chimera: $60 DLP High-Res 3D Printer
How To Make The Mini Metal Foundry
Laser Cut Light Fixture
Custom Singing Snow Globe
Batkid Tech #3: Wrist-Projector Communicator