These narrow mouth 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. The 10mL size is a replacement part fot the 1-6949M series of Pyrex microchemistry kits.
The Assortment Pack comes with one each 50, 125, 250, 500 and 1000mL.