WS Amp 2 Trace Elements Back Catalog number: 52128 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11708.12-100-IO 2,2',3,3',4-Pentachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 95602 Caffeine Price on request 2394.7-K-IPX5 m-Cresol-d8, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-5, Cas.no. 302911-90-6 Price on request