| http://www.w3.org/ns/prov#value | - This pneumatic chamber 122 is filled with a compressible gas such as air, forming an ???air cushion??? that allows for precise control of liquid delivery in this invention. [0038] In use, the operator applies pressure to the plunger member 116, which then causes the master plunger 114 to slide towards the slave plunger 118.
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