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These rings are made of borosilicate glass and are generally used as distillation column packing to achieve a higher number of theoretical plates than an unpacked column. The dimension shown applies to both the diameter and length. Packed in boxes containing one pound (0.45 kg). Available in 6 x 6 and 8 x 8 mm sizes.
Use these with Hemple-style columns such as item # CG-1228.