Glass iodine flasks with ground sockets and interchangeable stopper made of borosilicate 3.3 glass.

• Withstands high temperatures and thermal shocks
• Ungraduated, with ground socket
• Includes interchangeable ground glass stopper
• Funnel-shaped cup can be filled with water with stopper inserted to prevent vapor from escaping

Iodine flasks with ground joint and interchangeable stopper used for iodine value determination. Made of durable high quality, heavy duty 3.3 borosilicate glass with the following heat tolerances:
- Strain Point 515 °C
- Annealing Point 565 °C
- Softening Point 820 °C