CHROMABOND Kit for Environmental II consists of: each 5 columns of CHROMABOND SiOH-H2SO4/SA material: PP, filling: 500/500 mg, volume: 3 mL CHROMABOND SiOH material: PP, filling: 500 mg, volume: 3 mL CHROMABOND Florisil material:PP, filling: 1000 mg, volume: 6 mL CHROMABOND SA/SiOH materil: PP, filling: 500/500 mg, volume: 3 mL CHROMABOND NAN material: PP, filling: 700/2000/700 mg, volume: 6 mL