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Volumetric flasks for precise measurement in solution preparation and dilution are available at VWR. Select models of borosilicate glass, Nalgene, or other plastics that conform to Class A or Class B requirements. Amber and low actinic stained glass construction are available for light-sensitive preparations. Select glass, polyethylene or PTFE stoppers, including penny head options; screw caps and snap caps are also offered. Choose from a variety of capacities, including micro flasks, with permanent colour graduation lines. Purchase volumetric flasks individually or by the case.