Medical Marijuana Heavy Metals Calibration Back Catalog number: 50712 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9398.20-100-ME (+/-)-Citalopram-d4 hydrobromide (4-fluorophenyl-d4), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1219803-58-3 Price on request L20008100IO PCB No. 81, 10µg/ml in Isooctane, 10ml Price on request H825305 rac 4-Hydroxy Ephedrine Hydrochloride, 10mg Price on request