EPA Method 633.1 Analytes Back Catalog number: 40049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-2378-S 2,3,7,8-Tetrachlorodibenzofuran , 1.2ml x 50ug/ml, nonane Price on request 1578.23-100MG Pholcodine-N-oxide 1, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 433308-89-5 Price on request O635006 Omeprazole-d3 (benzimidazole-4,6,7-d3), 5mg Price on request