WS Amp 1 Trace Elements Back Catalog number: 52127 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0309.17-200-T 7H-Benzo[c]fluorene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 205-12-9 Price on request 93035 TX TPH Calibration Standard (High End) Price on request 59970 Anion Standard Price on request