✔ Chromatography column has a standard taper outer joint at the top, a 2mm/4mm PTFE stopcock at the bottom and thick-wall design for improving safety under pressurization. 

✔ Glass chromatography columns are made of borosilicate glass, low expansion coefficient, high transparency and high chemical chemistry, durable and sturdy. 

✔ These columns are ideal for fast separations in absorption chromatography applications. 

✔ Used in chromatography for the separation of chemical compounds, great for lab use.