PYREX 50mL EZ Access™ Wide Mouth Volumetric Flask,

Corning These 50mL PYREX(r) EZ Access(tm) volumetric flasks have an extra heavy duty glass wall significantly increases the product durability. These flasks are calibrated "to contain" (TC) and designed to meet Class A, ASTM tolerances for volumetric flasks. The wide funnel-like threaded top plus the wide neck design allows for easy filling and mixing of various materials into solution. This extra wide neck also allows access to larger capacity pipets. For added convenience, one size (GL32) of the chemically resistant, high temperature polybutylene terephthalate screw caps fits all flasks. This threaded cap has a PTFE liner to provide a secure closure for leak proof solution storage. For replacement caps, see No.1395-32HTC; for septum caps and septa, see Nos. 1395-32HTSC, 1395-32SS and 1395-32TS. -These flasks are Lot Traceable with certificates of compliance available in print: click "“Contact Us" on left navigational bar, then click on "Certificate of Compliance". - COG