These larger, more economical containers have a strong inner polyethylene bag that collapses after the solution is delivered. After the shipping cap is removed and the dispensing spigot affixed, the solution can be dispensed conveniently from the container. Container can be inverted and easily attached to instruments or burets. In this position the container can be stored high out of the way and entire contents delivered without further tipping of the container. Please inquire for pH values other than those listed below.