Instrument Standard 2 Back Catalog number: 52078 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 4PM201 2,2',3,3',4',5,6,6'-Octachloro-4-methoxybiphenyl, 1.2ml x 50ug/ml, nonane Price on request 31411 Tetrachloroethene, 2000µg/ml in MeOH, 1ml Price on request DF-149-S 1,4,9-Trichlorodibenzofuran, 1.2ml x 50ug/ml, toluene Price on request