Chromatographic columns with indentations and beaded rim
Chromatographic columns with indentations and NS socket
Chromatographic columns with frit and beaded rim
Chromatographic columns with frit and NS socket with PTFE stopcock
Chromatographic columns with frit and NS socket with needle-valve stopcock
Chromatographic columns with frit, with NS socket and NS cone, with PTFE stopcock
Chromatographic columns with frit, with NS socket and NS cone, with needle-valve stopcock
