A combination crystallizing and filtration centrifuge tube. Filtered solutions are allowed to cool in the Craig tube, inducing crystallization.

• Manufactured from 33 expansion, low extractable borosilicate glass
• To balance in a centrifuge, two tubes are required

The Craig stopper is placed in the tube neck and the whole apparatus is inverted into a test or centrifuge tube.

Centrifuging forms a mat of crystals between the stopper and the walls of the Craig tube and draws away excess solvent. Further washing and crystallization steps are possible.

Ø×H: 14×100 mm