Corning Pyrex 250 ml Narrow Mouth Erlenmeyer Flask With Pyrex Standard Taper Stopper

These narrow mouth 250 mL PYREX Erlenmeyer flasks have No. 27 PYREX Standard Taper stoppers for secure sealing. Their uniform wall thickness provides the proper balance between mechanical strength and thermal shock resistance. For convenience, these flasks are graduated to show approximate capacity. For replacement stoppers see No. 7650.