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This economical glass burette, with 0.1 ml divisions, regulates fluid flow with a glass-bead stopcock. Burettes are used to accurately measure out chemical solutions.
Note: To regulate fluid flow with this pinch-clamp stopcock, squeeze the rubber tubing right on the bead while pushing it a little to one side, thus creating a gap along the side of the bead for liquid to pass through.
Shipping Note: This bulky item only ships Economy or Ground Service to a street address in the 50 US states.