EPA Method 551.1 - Analytes Mix #1 Back Catalog number: 30098 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11907.20-1G Fluorescein disodium salt dihydrate, 90%,neat,neat,1g, Price on request 4PM198 2,2',3,3',4,5,5',6-Octachloro-4'-methoxybiphenyl, 1.2ml x 50ug/ml, nonane Price on request 10976.6-K-AN o-Toluidine-d9,1000 µg/mL,acetonitrile,1mL, Price on request