I'm planning to do a project on the effects of various chemicals on the growth of yeast, but I've got a problem. I have everything figured out apart from how I could get quantitative results of the actual growth rate. I work with very small quantities, so drying them won't do any good. No matter how hard I thought about this I couldn't come up with anything solid, only a vague idea of finding the average "population density". Does anybody have any ideas?
P.S In case you're wondering, this is not part of any class work.