Plastic Knobs for desiccator with open bore.

Desiccators are suitable for drying and dehydration processes.
The versions with stopcock are also suitable for storage under vacuum.
made of borosilicate glass 3.3 Simax
very good chemical resistance
minimal thermal expansion
high resistance to thermal shocks
autoclavable
with ground flat flange
with plastic knob in the interchangeable lid
discs are included