QuEChERS净化管，15 ml, 900 mg 硫酸镁, 300 mg PSA, 300 mg C18, 90 mg GCB, 300 mg 硅胶, 50支/盒

QuEChERS cleanup tube, 15 ml, 900 mg MgSO4, 300 mg PSA, 300 mg C18, 90 mg GCB, 300 mg silica gel, 50pcs/pack