These general purpose cylindrical chromatography jar with tops ground to close tolerances to insure a tight cover fit. Covers are not supplied.

These cylindrical chromatography jars are made of Pyrex® borosilicate glass.

The jar edge is flat within 0.102 mm (0.004") on 6.6 L (1.7 gal.) jar, all others are flat within 0.254 mm (0.01").