- Manufactured from polyethylene
- The large head provides a good grip and gives protection if glassware is accidentally knocked over
- The molded ridges on the tapered body of the stopper help to provide a secure seal
- Colour-coded inserts in the top of the stoppers allow the easy identification of the corresponding ground neck size
Colored inserts in the different sizes of stoppers allow the easy identification of the corresponding ground neck size. These polyethylene ‘B’ length stoppers are ideally suited for use with volumetric flasks and mixing cylinders.
|Catalog No||Color Code||Cone (NS)|