Merck, CLS4321A250-1EA, Pyrex®round-bottom boiling flask, short neck

General description
PYREX® round-bottom boiling flasks are routinely used in various laboratory applications.
Manufactured from low expansion borosilicate glass that provides better clarity, strength, heat, and chemical resistance even in the most demanding laboratory conditions.
Precise wall thickness ensures optimal thermal transfer and provides mechanical strength for greater shock resistance.
Chemically durable, these flasks are ideal for contamination-free results.
The normal working temperature for PYREX® boling flasks is 230 °C.

With full length joints, and short necks.
Legal Information
PYREX is a registered trademark of Corning, Inc.