Guard Col 5m 0.05mmid 0.35mmod ,Each

Details:

Intermediate-polarity deactivated guard columns^ 0.05Mm id. 0.363 /- 0.012Mm od. 5-Meter length. Not tested with the grob test mix because of a high pressure drop. 30-And 60-meter lengths are banded in 5-meter sections. Angstroms recommendation: cut 60m guard columns into shorter lengths.