EPA Method 551.1 Internal Standard Back Catalog number: 30103 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92478 HPLC Herbicides WS Price on request 1510.14-200-IO 2-Methylacridine, 200µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 613-15-0 Price on request 2198.11-100-ME 2-Methyl-4-nitronaphthalene, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 13615-38-8 Price on request