EPA Method 625 Base/Neutrals Mix #4 Back Catalog number: 19317 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2160.12-50-T 2'-Fluoro-2,4,4'-tribromodiphenyl ether, 50µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 876310-22-4 Price on request 10535.27-1MG 25-Hydroxyvitamin D3-d6 (Dimethyl 26,27-d6) Price on request 50592 Copper (Cu) - 5 PPM Price on request