A liquid metered dispensing squeeze bottle includes: (a.) a squeezable container having an opening for dispensing liquid therefrom at one end and a bottom at the other end; (b.) a nonflexible trap chamber of a predetermined volume, connected to the opening of the container; (c.) a dip tube, and (d.) a one way valve system at the bottom of the dip tube that includes a leg. There is also a flexion mechanism on one or both of the dip tube and the leg to permit folding of the leg toward the tube for insertion into a standard neck or narrow neck container.