I am trying to do something that requires very high precision, so I got stuck in a question: What is the lower bound of a size of a water droplet (and what is the equation, I want to use different chemicals in general) that I will be able to push of a syringe, so it would actually drop? A more accurate way of asking it - How much force will push how much liquid from a pipe with radius r? What weight of drop can not be held by surface tension on said pipe?
I am not a physics expert, so if I'm asking something that should be obvious, apologies, I've looked and couldn't find an answer.
