Has markings which are permanently fused into glass; fine, sharp lines; easy-to-read numbers. Smooth, microfinish stopcock barrel assures leak resistance. Has 2mm bore PTFE stopcock plug and dustcover.
Class A burettes—Tolerances established by ASTM E 694 for volumetric ware, ASTM E 542 for calibration of volumetric ware, and ASTM E 287 for burettes.
Corning is a registered trademark of Corning, Inc.
PYREX is a registered trademark of Corning, Inc.