Hi @Eleni_M
Did you have any success with either of these?
I was looking for a solution to reverse flow through the existing pumps for inoculation, and noticed that the Adafruit link I gave here is now dead (fix).
Also, I think you said elsewhere that your using larger vials - are you just using taller ones? It would be great to hear how that’s going, as various people are looking at larger Pioreactors and trying to work out best practice.