High-quality borosilicate Class B glass cylinders with an interchangeable polypropylene stopper and hexagonal base.

• Made of high quality, heavy duty, borosilicate 3.3 glass
• Conforms with DIN ISO 4788 Class B tolerance standards
• Interchangeable polypropylene stopper
• hexagonal base provides maximum stability and prevents rolling when placed on side
• Easy-to-read blue graduations and specifications contrast against light color liquids

No spout. Class B tolerance conforms with DIN ISO standards. Autoclavable, with superior chemical durability. Low temperature gradient - can withstand high temperatures and thermal shocks. Calibrated to contain.

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