Eisco Glass Volumetric Flasks with Plastic Stopper, Class B

Class B Volumetric flasks are made from borosilicate 3.3 glass and feature a graduation mark, polypropylene stopper, and blue enamel markings.

• Made of high quality, heavy duty, borosilicate 3.3 glass for excellent durability and chemical resistance
• Class B tolerances conform with DIN ISO 1042 standards for accuracy
• Fitted with a chemically-resistant polypropylene flat-top stopper
• Easy-to-read blue enamel graduations and specifications for contrast against clear liquids

Calibrated to contain.

Eisco Labs borosilicate glass has the following heat tolerances:
- Strain point 515 °C
- Annealing point 565 °C
- Softening point 820 °C