- In compliance with Din 12252 standard
- Used on different kind of jointed products like bottles, stoppered cylinder and jointed flasks mainly volumetric flasks.
- Hexagonal head if placed on at head end avoids contamination of ground surface, with hexagonal form head it also helps in preventing the rolling of the stopper and provides a good grip.
- The stoppers below comes in drip tip form also which if placed on the flask helps liquid to return to the flask till the last drop.
![Din](https://www.glasscolabs.com/wp-content/uploads/2018/04/DIN-e1534919034748.png)
![Boro 3.3 or Borosilicate 3.3 is a type of glass having very low coefficient of thermal expansion](https://www.glasscolabs.com/wp-content/uploads/2018/08/001.png)
![White Printing](https://www.glasscolabs.com/wp-content/uploads/2018/08/022.png)
![Chemical Resistant](https://www.glasscolabs.com/wp-content/uploads/2018/04/002-e1534487995427.png)