EPA Method 8240A Matrix Spiking Standard Back Catalog number: 82410 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 4M163 2,3,3',4',5,6-Hexachloro-4-methoxybiphenyl, 1.2ml x 50ug/ml, nonane Price on request 681247 Methylparaben, 100 µg/ml, Acetonitrile, 5ml Price on request XA13920000AL Formothion, 100µg/ml in Acetonitrile Price on request