The sample was certified using USEPA SW846, 3rd edition, method 8260, and is ideal for methanol extraction. Certified valuesAcetone. 1.1 mg/Kg 4-Methyl-2-pentanone (MIBK) .3.4 mg/Kg Benzene 2.81 mg/Kg Methyl tert-butyl ether (MTBE) 5.96 mg/Kg Carbon tetra