Originally Posted by FriendsNotFood
Thanks Cthulu, I'll look into empty soap dispensers. I just didn't know how to find out how much they dispense per pump.
Buy a 3 or 5 ml syringe with plunger taken all the way out, and hold the needle end shut with a finger, then pump once into the open end, measure the volume. Can get syringe on [Ebay Link Removed]