WS Trace Elements #1 Back Catalog number: 55012 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-1238-S 1,2,3,8-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 79347 Cyprodinil Price on request 0047.24-100-T 1-Nitrocoronene, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 81316-84-9 Price on request