EPA Method 8240A Internal Standard Back Catalog number: 22003 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673562 beta-Endosulfan, 100 µg/ml, Ethyl acetate, 5ml Price on request X9137 Naphthalene Price on request BDE-181 2,2',3,4,4',5,6-Heptabromodiphenyl ether, 1.2ml x 50ug/ml, nonane Price on request