PYREX® VISTA™ Economy Class B Volumetric Flask with PE Snap-Cap, Corning 70581

These Class B PYREX® Vista™ volumetric flasks are designed for use by customers that do not require the precision accuracy of a Class A capacity flask. The shape, body, and wall are the same as a regular flask but display the large blue marking spot and designation 'PYREX® Vista™' unique to the PYREX® Vista™ line. Capacity tolerance is twice that specified for Class A volumetric ware. The graduation line is sharp and permanent; large blue block letters make inscriptions easy to read. Heavy duty long neck is tooled for No. 50 polyethylene snap-cap. This is the suggested replacement for Corning's 5581 series volumetric flasks.