EPA Method 551.1 Standard Back Catalog number: 94519 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675113 4-Nitrophenyl a-D-maltohexaoside, 100mg Price on request 673540 Demeton-S-methyl, 100 µg/ml, Ethyl acetate, 5ml Price on request 0064.20-200-T Dinaphtho[2,1-b;1',2'-d]furan, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 194-63-8 Price on request