get this little thing, you won't be disappointed. more accurate than using the plastic ones, and easier to clean too.
prefer these over disposables
I like these better than disposable because when you need consistent drop sizes, these seem to work better. These are such a common item for labs in almost any curriculum and the price make them an easy add-on to any order.
Great prouct. Had a few show up with paper or cardboard shavings in them. But over all great product. Never come in broken like some of the other products that are notorious for showing up broken from here.