PYREX® Narrow Mouth Erlenmeyer Flasks with Heavy Duty Rim, Corning 4980

These PYREX® Erlenmeyer flasks are designed with heavy duty rims to reduce chipping. Their uniform wall thickness provides the proper balance between mechanical strength and thermal shock resistance. Approximate graduations are in durable white enamel. An extra large marking space is also provided. Material: borosilicate glass code 7740.