BTEX Standard Reference Solution 6 components: 200mg/l each of Benzene [CAS:71-43-2] ; Ethylbenzene [CAS:100-41-4] ; Toluene [CAS:108-88-3] ; o-Xylene [CAS:95-47-6] ; m-Xylene [CAS:108-38-3] ; p-Xylene [CAS:106-42-3] in Methanol, 1 ml (Matrix: Methanol) , (Concentration200 mg/l)