Class A borosilicate glass Volumetric flasks with PE stoppers and calibration certificates.

• Withstands high temperatures and thermal shocks
• Single blue graduation mark
• Printed with unique alpha numeric serial
• Individually calibrated at 20 °C

Volumetric flask made of high quality, heavy duty Borosilicate 3.3 glass. Calibrated to contain. Eisco borosilicate glass has the following heat tolerances:
- Strain Point 515 °C
- Annealing Point 565 °C
- Softening Point 820 °C