Sorbent Tube, Silica Gel, treated w/sulfuric acid, 8 x 110-mm size, 2 sections, 200/200 mg sorbent, 40/60 mesh 226-42

Sorbent Tube, Silica Gel, treated w/sulfuric acid, 8 x 110-mm size, 2 sections, 200/200 mg sorbent, 40/60 mesh 226-42