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").