The Ace Large Chromatography Column manufactured by Ace Glass comes with #50 internal Ace-Threds on ends which are compatible with various upper and lower adapters.
Specification
I.D. × L: 50 mm × 600 mm Capacity: 1.18 L
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SynthwareTM Chromatography Column With Spherical Joint, PTFE Stopcock and Coarse Frit, Joint: ST/NS 35/20, I.D. × L 20.0 mm × 457 mm, Kemtech America Inc. (CAT#: STEM-L-3985-LC)