I'm interested in something like this, but for a different application. I want to mix up stuff like beard oil or vape juice. Interested in delivering between

I'm interested in something like this, but for a different application. I want to mix up stuff like beard oil or vape juice. Interested in delivering between 0.1ml and 10ml of solution (Eg: 0.1ml of 100mg/ml nicotine, 10ml or vegetable glycerine, or 0.5ml of an essential oil, 10ml of hemp seed oil.) I never could find a reliable way to deliver small amounts of fluid repeatedly. In this type of work its the same fluid going to each place so you don't have contamination. I would to produce an arbitrary mix from, say, 40 containers of different fluids. Would love any suggestions. I looked at peristaltic pumps and all that, never could find a cost effective solution--- closest I came was syringes attached to linear actuators, and maybe an optical system to observe the position of the syringe to ensure it was the correct distance. OR possibly a squeezing assembly with disposable plastic pipettes, but that seemed imprecise. I put the idea on the back burner as a result.