Erlenmeyer flasks that can use a glass stopper.

• Made from ASTM E-438 Type-1 Class A, Borosilicate 3.3 glass
• Flasks include ground joints manufactured per ASTM E-1404, Type 2, Class-1 requirement
• Flasks are printed in white color enamel

Borosilicate glass flasks are designed to provide the best combination of thermal shock resistance and physical strength. They feature 24/40 jointed sockets and graduations in durable white enamel.