EPA Method 507 Pesticide Standard Back Catalog number: 91974 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0917.14-500-IO 2,4-Dimethyldiphenylsulfide, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 16704-47-5 Price on request BRP-2345 2,3,4,5-Tetrabromophenol, 1.2ml x 100ug/ml, toluene Price on request 677602 Retinol, 50mg Price on request