G;ass Graduated Concentrator Tube 10ml 100mm in height with 19/22 joint

This graduated concentrator tube is used with Kuderna-danish evaporation setups.
With 19/22 joint top outer joint,which can be stoppered by a 19/22 inner joint to make the tube for storage.
The overall height is 100mm,the capacity is 10ml.
for subdivisios 0 to 1ml in 0.1,2 to 10ml in 1.0.
Laboy glass are all made of high-quality borosilicate glass and made by hand-blowing to ensure uniform wall thickness.