I am using a 5 mL syringe, I have tried the conventional method of pulling it into the syringe, but it creates a lot of air bubbles as well as there's hardly any solution being transferred. I tried backfilling as well but that creates a air headspace which hampers my process of extrusion. The viscosity of the solution is 10-15 Pa . s or 10k-15k cP. Can someone think of a good method to transfer the solution?