Glaucoma - How many drops should someone get from a 10ml bottle of Azopt (brinzolamide ophthalmic?

I was given a sample bottle Azopt by my dr without knowing or being told this is not a SQUEEZE bottle. I called the company and they told me you do NOT squeeze the sides together. you turn it over and tap or push on the bottom and you wait for a tiny drop to come to the end and then you have to be ready to drop it into your eye. I was told some of the sales people don't explain to the dr office how these samples work. and neither did the docs office. I am getting a new regular dosing bottle soon from the drug store so i will see how this will work - not sure if it will be like the sample which dispenses a really tiny drop!