Arsenic (As) Back Catalog number: 58133 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3922.9-25MG Lamotrigine, neat, Solvent-neat, Unit 25MG, # of units-, Cas.no. 84057-84-1 Price on request 10940.15-100-ME Tramadol-13C,d3 HCl, 100µg/ml in MeOH, 1ml Price on request 1577.23-100-ME Pholcodine, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 509-67-1 Price on request