WS Amp 2 Trace Elements Back Catalog number: 52128 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673534 4,4'-DDE, 100 µg/ml, Ethyl acetate, 5ml Price on request 3207.17-K-IO 10-cis-Heptadecenoic acid, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 29743-97-3 Price on request 673612 Fonofos, 100 µg/ml, Ethyl acetate, 5ml Price on request