Analyte: 2,4-D methyl ester, CAS Number: 1928-38-7; Analyte: Dalapon methyl ester, CAS Number: 17640-02-7; Analyte: Dicamba methyl ester, CAS Number: 6597-78-0; Analyte: Dinoseb methyl ether, CAS Number: 6099-79-2; Analyte: 2,4,5-T methyl ester, CAS Number: 1928-37-6; Analyte: Silvex methyl ester, CAS Number: 4841-20-7; Analyte: Picloram methyl ester, CAS Number: 14143-55-6; Analyte: Pentachloroanisole, CAS Number: 1825-21-4 .