Sorbent Tube, Silica Gel, treated w/sulfuric acid, 6 x 70-mm size, 2 sections, 150/75 mg sorbent, 20/40 mesh, 50Pk (226-53)

Sorbent Tube, Silica Gel, treated w/sulfuric acid, 6 x 70-mm size, 2 sections, 150/75 mg sorbent, 20/40 mesh, 50Pk (226-53)