EPA Method 525 Spike C Back Catalog number: 92314 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680067 Nicotinamide, 250mg Price on request 8458.6-100-AN Oxydemeton-methyl, 100μg/mL in Acetonitrile, 1ml Price on request 3741.12-100-IO 2,3,4',5,6-Pentachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 18259-05-7 Price on request